mirror of
https://gitee.com/mirrors_PX4/PX4-Autopilot.git
synced 2026-10-28 12:13:33 +08:00
Resync new repository with old repo r5166
git-svn-id: http://svn.code.sf.net/p/nuttx/code/trunk@5153 42af7a65-404d-4744-a932-0658087f49c3
This commit is contained in:
patacongo
@@ -0,0 +1,37 @@
|
||||
############################################################################
|
||||
# configs/xtrs/src/Make.defs
|
||||
#
|
||||
# Copyright (C) 2008 Gregory Nutt. All rights reserved.
|
||||
# Author: Gregory Nutt <gnutt@nuttx.org>
|
||||
#
|
||||
# Redistribution and use in source and binary forms, with or without
|
||||
# modification, are permitted provided that the following conditions
|
||||
# are met:
|
||||
#
|
||||
# 1. Redistributions of source code must retain the above copyright
|
||||
# notice, this list of conditions and the following disclaimer.
|
||||
# 2. Redistributions in binary form must reproduce the above copyright
|
||||
# notice, this list of conditions and the following disclaimer in
|
||||
# the documentation and/or other materials provided with the
|
||||
# distribution.
|
||||
# 3. Neither the name NuttX nor the names of its contributors may be
|
||||
# used to endorse or promote products derived from this software
|
||||
# without specific prior written permission.
|
||||
#
|
||||
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
||||
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
||||
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
|
||||
# FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
|
||||
# COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
|
||||
# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
|
||||
# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
|
||||
# OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
|
||||
# AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
||||
# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
|
||||
# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
||||
# POSSIBILITY OF SUCH DAMAGE.
|
||||
#
|
||||
############################################################################
|
||||
|
||||
HEAD_ASRC = xtrs_head.asm
|
||||
|
||||
@@ -0,0 +1,77 @@
|
||||
############################################################################
|
||||
# configs/xtrs/src/Makefile
|
||||
#
|
||||
# Copyright (C) 2008 Gregory Nutt. All rights reserved.
|
||||
# Author: Gregory Nutt <gnutt@nuttx.org>
|
||||
#
|
||||
# Redistribution and use in source and binary forms, with or without
|
||||
# modification, are permitted provided that the following conditions
|
||||
# are met:
|
||||
#
|
||||
# 1. Redistributions of source code must retain the above copyright
|
||||
# notice, this list of conditions and the following disclaimer.
|
||||
# 2. Redistributions in binary form must reproduce the above copyright
|
||||
# notice, this list of conditions and the following disclaimer in
|
||||
# the documentation and/or other materials provided with the
|
||||
# distribution.
|
||||
# 3. Neither the name NuttX nor the names of its contributors may be
|
||||
# used to endorse or promote products derived from this software
|
||||
# without specific prior written permission.
|
||||
#
|
||||
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
||||
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
||||
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
|
||||
# FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
|
||||
# COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
|
||||
# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
|
||||
# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
|
||||
# OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
|
||||
# AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
||||
# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
|
||||
# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
||||
# POSSIBILITY OF SUCH DAMAGE.
|
||||
#
|
||||
############################################################################
|
||||
|
||||
-include $(TOPDIR)/Make.defs
|
||||
|
||||
CFLAGS += -I$(TOPDIR)/sched -I$(TOPDIR)/arch/z80/src/common -I$(TOPDIR)/arch/z80/src/z80
|
||||
|
||||
ASRCS =
|
||||
AOBJS = $(ASRCS:$(ASMEXT)=$(OBJEXT))
|
||||
CSRCS = xtr_irq.c xtr_serial.c xtr_timerisr.c xtr_lowputc.c
|
||||
COBJS = $(CSRCS:.c=$(OBJEXT))
|
||||
|
||||
SRCS = $(ASRCS) $(CSRCS)
|
||||
OBJS = $(AOBJS) $(COBJS)
|
||||
|
||||
CFLAGS += -I $(TOPDIR)/arch/$(CONFIG_ARCH)/src
|
||||
CFLAGS += -I $(TOPDIR)/arch/$(CONFIG_ARCH)/include
|
||||
|
||||
all: libboard$(LIBEXT)
|
||||
|
||||
$(AOBJS): %$(OBJEXT): %$(ASMEXT)
|
||||
$(call ASSEMBLE, $<, $@)
|
||||
|
||||
$(COBJS) $(LINKOBJS): %$(OBJEXT): %.c
|
||||
$(call COMPILE, $<, $@)
|
||||
|
||||
libboard$(LIBEXT): $(OBJS)
|
||||
@( for obj in $(OBJS) ; do \
|
||||
$(call ARCHIVE, $@, $${obj}); \
|
||||
done ; )
|
||||
|
||||
.depend: Makefile $(SRCS)
|
||||
@$(MKDEP) $(CC) -- $(CFLAGS) -- $(SRCS) >Make.dep
|
||||
@touch $@
|
||||
|
||||
depend: .depend
|
||||
|
||||
clean:
|
||||
@rm -f libboard$(LIBEXT) *~ .*.swp
|
||||
$(call CLEAN)
|
||||
|
||||
distclean: clean
|
||||
@rm -f Make.dep .depend
|
||||
|
||||
-include Make.dep
|
||||
@@ -0,0 +1 @@
|
||||
This directory contains drivers unique to the xtrs80 emulation
|
||||
@@ -0,0 +1,116 @@
|
||||
/****************************************************************************
|
||||
* configs/xtrs/src/xtr_irq.c
|
||||
*
|
||||
* Copyright (C) 2008-2009 Gregory Nutt. All rights reserved.
|
||||
* Author: Gregory Nutt <gnutt@nuttx.org>
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions
|
||||
* are met:
|
||||
*
|
||||
* 1. Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
|
||||
* 2. Redistributions in binary form must reproduce the above copyright
|
||||
* notice, this list of conditions and the following disclaimer in
|
||||
* the documentation and/or other materials provided with the
|
||||
* distribution.
|
||||
* 3. Neither the name NuttX nor the names of its contributors may be
|
||||
* used to endorse or promote products derived from this software
|
||||
* without specific prior written permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
||||
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
||||
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
|
||||
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
|
||||
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
|
||||
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
|
||||
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
|
||||
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
|
||||
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
||||
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
|
||||
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
||||
* POSSIBILITY OF SUCH DAMAGE.
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
/****************************************************************************
|
||||
* Included Files
|
||||
****************************************************************************/
|
||||
|
||||
#include <nuttx/config.h>
|
||||
|
||||
#include <nuttx/irq.h>
|
||||
|
||||
#include "up_arch.h"
|
||||
#include "os_internal.h"
|
||||
#include "up_internal.h"
|
||||
|
||||
/****************************************************************************
|
||||
* Definitions
|
||||
****************************************************************************/
|
||||
|
||||
/****************************************************************************
|
||||
* Public Data
|
||||
****************************************************************************/
|
||||
|
||||
/****************************************************************************
|
||||
* Private Data
|
||||
****************************************************************************/
|
||||
|
||||
/****************************************************************************
|
||||
* Private Functions
|
||||
****************************************************************************/
|
||||
|
||||
/****************************************************************************
|
||||
* Public Functions
|
||||
****************************************************************************/
|
||||
|
||||
/****************************************************************************
|
||||
* Name: up_irqinitialize
|
||||
****************************************************************************/
|
||||
|
||||
void up_irqinitialize(void)
|
||||
{
|
||||
/* Attach the timer interrupt -- There is not special timer interrupt
|
||||
* enable in the simulation so it must be enabled here before interrupts
|
||||
* are enabled.
|
||||
*
|
||||
* NOTE: Normally, there are seperate enables for "global" interrupts
|
||||
* and specific device interrupts. In such a "normal" case, the timer
|
||||
* interrupt should be attached and enabled in the function up_timerinit()
|
||||
*/
|
||||
|
||||
irq_attach(Z80_IRQ_SYSTIMER, (xcpt_t)up_timerisr);
|
||||
|
||||
/* And finally, enable interrupts (including the timer) */
|
||||
|
||||
#ifndef CONFIG_SUPPRESS_INTERRUPTS
|
||||
irqrestore(Z80_C_FLAG);
|
||||
#endif
|
||||
}
|
||||
|
||||
/****************************************************************************
|
||||
* Name: up_disable_irq
|
||||
*
|
||||
* Description:
|
||||
* Disable the IRQ specified by 'irq'
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
void up_disable_irq(int irq)
|
||||
{
|
||||
irqrestore(0);
|
||||
}
|
||||
|
||||
/****************************************************************************
|
||||
* Name: up_enable_irq
|
||||
*
|
||||
* Description:
|
||||
* Enable the IRQ specified by 'irq'
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
void up_enable_irq(int irq)
|
||||
{
|
||||
irqrestore(true);
|
||||
}
|
||||
@@ -0,0 +1,105 @@
|
||||
/********************************************************************************
|
||||
* configs/xtrs/src//xtr_lowputc.c
|
||||
*
|
||||
* Copyright (C) 2008 Jacques Pelletier. All rights reserved.
|
||||
* Author: Jacques Pelletier
|
||||
*
|
||||
* This file is a part of NuttX and hence
|
||||
*
|
||||
* Copyright (C) 2008-2009 Gregory Nutt. All rights reserved.
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions
|
||||
* are met:
|
||||
*
|
||||
* 1. Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
|
||||
* 2. Redistributions in binary form must reproduce the above copyright
|
||||
* notice, this list of conditions and the following disclaimer in
|
||||
* the documentation and/or other materials provided with the
|
||||
* distribution.
|
||||
* 3. Neither the name NuttX nor the names of its contributors may be
|
||||
* used to endorse or promote products derived from this software
|
||||
* without specific prior written permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
||||
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
||||
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
|
||||
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
|
||||
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
|
||||
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
|
||||
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
|
||||
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
|
||||
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
||||
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
|
||||
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
||||
* POSSIBILITY OF SUCH DAMAGE.
|
||||
*
|
||||
********************************************************************************/
|
||||
|
||||
/********************************************************************************
|
||||
* Included Files
|
||||
********************************************************************************/
|
||||
|
||||
#include <nuttx/config.h>
|
||||
|
||||
#include <nuttx/irq.h>
|
||||
#include <nuttx/arch.h>
|
||||
#include <assert.h>
|
||||
#include <debug.h>
|
||||
|
||||
#include "os_internal.h"
|
||||
#include "up_internal.h"
|
||||
|
||||
/* Includes trs80-m3.h for assembler call addresses */
|
||||
|
||||
#include <board/board.h>
|
||||
|
||||
/********************************************************************************
|
||||
* Definitions
|
||||
********************************************************************************/
|
||||
|
||||
/********************************************************************************
|
||||
* Public Data
|
||||
********************************************************************************/
|
||||
|
||||
/********************************************************************************
|
||||
* Private Data
|
||||
********************************************************************************/
|
||||
|
||||
/********************************************************************************
|
||||
* Private Functions
|
||||
********************************************************************************/
|
||||
|
||||
/********************************************************************************
|
||||
* Public Functions
|
||||
********************************************************************************/
|
||||
|
||||
/********************************************************************************
|
||||
* Name: z80_lowputc
|
||||
********************************************************************************/
|
||||
|
||||
void z80_lowputc(char ch) __naked
|
||||
{
|
||||
_asm
|
||||
ld hl, #2
|
||||
add hl, sp
|
||||
ld a, (hl)
|
||||
call _TRS80_M3_VDCHAR ;0x0033
|
||||
ret
|
||||
_endasm;
|
||||
}
|
||||
|
||||
/********************************************************************************
|
||||
* Name: z80_lowgetc
|
||||
********************************************************************************/
|
||||
|
||||
char z80_lowgetc(void) __naked
|
||||
{
|
||||
_asm
|
||||
call _TRS80_M3_KBDSCN ;0x002b
|
||||
ld l, a
|
||||
ld h, #0
|
||||
ret
|
||||
_endasm;
|
||||
}
|
||||
@@ -0,0 +1,411 @@
|
||||
/****************************************************************************
|
||||
* config/xtrs/src/xtr_serial.c
|
||||
*
|
||||
* Copyright (C) 2008 Jacques Pelletier. All rights reserved.
|
||||
* Author: Jacques Pelletier
|
||||
*
|
||||
* This file is a part of NuttX and hence
|
||||
*
|
||||
* Copyright (C) 2008-2009, 2012 Gregory Nutt. All rights reserved.
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions
|
||||
* are met:
|
||||
*
|
||||
* 1. Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
|
||||
* 2. Redistributions in binary form must reproduce the above copyright
|
||||
* notice, this list of conditions and the following disclaimer in
|
||||
* the documentation and/or other materials provided with the
|
||||
* distribution.
|
||||
* 3. Neither the name NuttX nor the names of its contributors may be
|
||||
* used to endorse or promote products derived from this software
|
||||
* without specific prior written permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
||||
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
||||
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
|
||||
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
|
||||
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
|
||||
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
|
||||
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
|
||||
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
|
||||
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
||||
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
|
||||
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
||||
* POSSIBILITY OF SUCH DAMAGE.
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
/****************************************************************************
|
||||
* Included Files
|
||||
****************************************************************************/
|
||||
|
||||
#include <nuttx/config.h>
|
||||
|
||||
#include <sys/types.h>
|
||||
#include <stdint.h>
|
||||
#include <stdbool.h>
|
||||
#include <unistd.h>
|
||||
#include <string.h>
|
||||
#include <errno.h>
|
||||
#include <debug.h>
|
||||
|
||||
#include <nuttx/irq.h>
|
||||
#include <nuttx/arch.h>
|
||||
#include <nuttx/serial/serial.h>
|
||||
#include <arch/serial.h>
|
||||
|
||||
#include "up_arch.h"
|
||||
#include "os_internal.h"
|
||||
#include "up_internal.h"
|
||||
|
||||
#ifdef USE_SERIAL_DRIVER
|
||||
|
||||
/****************************************************************************
|
||||
* Definitions
|
||||
****************************************************************************/
|
||||
#define TRSDOS 0 /* TRSDOS 1.3 */
|
||||
#define LDOS 1 /* LDOS 5.3.1 */
|
||||
|
||||
#define MODEM_STATUS 0xe8
|
||||
#define RESET 0xe8
|
||||
#define BAUD 0xe9
|
||||
#define STATUS 0xea
|
||||
#define CONTROL 0xea
|
||||
#define RECV_REG 0xeb
|
||||
#define XMIT_REG 0xeb
|
||||
|
||||
#define XMIT_REG_EMPTY 0x40
|
||||
|
||||
#define WRINTMASK 0xe0
|
||||
|
||||
#define MASK_XMIT_INT 0x10
|
||||
#define MASK_RECV_INT 0x20
|
||||
#define MASK_ERR_INT 0x40
|
||||
|
||||
#if TRSDOS
|
||||
#define WRINTMASK_SHADOW 0x4213
|
||||
#define XMIT_INT_VECTOR 0x4207
|
||||
#define RECV_INT_VECTOR 0x420a
|
||||
#endif
|
||||
|
||||
#if LDOS
|
||||
#define WRINTMASK_SHADOW 0x4474
|
||||
#define XMIT_INT_VECTOR 0x447D
|
||||
#define RECV_INT_VECTOR 0x447F
|
||||
#endif
|
||||
|
||||
/****************************************************************************
|
||||
* Private Types
|
||||
****************************************************************************/
|
||||
|
||||
/****************************************************************************
|
||||
* Private Function Prototypes
|
||||
****************************************************************************/
|
||||
|
||||
static int up_setup(struct uart_dev_s *dev);
|
||||
static void up_shutdown(struct uart_dev_s *dev);
|
||||
static int up_attach(struct uart_dev_s *dev);
|
||||
static void up_detach(struct uart_dev_s *dev);
|
||||
static int up_ioctl(struct file *filep, int cmd, unsigned long arg);
|
||||
static int up_receive(struct uart_dev_s *dev, uint32_t *status);
|
||||
static void up_rxint(struct uart_dev_s *dev, bool enable);
|
||||
static bool up_rxavailable(struct uart_dev_s *dev);
|
||||
static void up_send(struct uart_dev_s *dev, int ch);
|
||||
static void up_txint(struct uart_dev_s *dev, bool enable);
|
||||
static bool up_txready(struct uart_dev_s *dev);
|
||||
static bool up_txempty(struct uart_dev_s *dev);
|
||||
|
||||
/****************************************************************************
|
||||
* Private Variables
|
||||
****************************************************************************/
|
||||
|
||||
struct uart_ops_s g_uart_ops =
|
||||
{
|
||||
up_setup, /* setup */
|
||||
up_shutdown, /* shutdown */
|
||||
up_attach, /* attach */
|
||||
up_detach, /* detach */
|
||||
up_ioctl, /* ioctl */
|
||||
up_receive, /* receive */
|
||||
up_rxint, /* rxint */
|
||||
up_rxavailable, /* rxavailable */
|
||||
up_send, /* send */
|
||||
up_txint, /* txint */
|
||||
up_txready, /* txready */
|
||||
up_txempty, /* txempty */
|
||||
};
|
||||
|
||||
/* I/O buffers */
|
||||
|
||||
static char g_uartrxbuffer[CONFIG_UART_RXBUFSIZE];
|
||||
static char g_uarttxbuffer[CONFIG_UART_TXBUFSIZE];
|
||||
|
||||
/* This describes the state of the fake UART port. */
|
||||
|
||||
static uart_dev_t g_uartport =
|
||||
{
|
||||
0, /* open_count */
|
||||
false, /* xmitwaiting */
|
||||
false, /* recvwaiting */
|
||||
false, /* isconsole */
|
||||
{ 1 }, /* closesem */
|
||||
{ 0 }, /* xmitsem */
|
||||
{ 0 }, /* recvsem */
|
||||
{ /* xmit */
|
||||
{ 1 }, /* sem */
|
||||
0, /* head */
|
||||
0, /* tail */
|
||||
CONFIG_UART_TXBUFSIZE, /* size */
|
||||
g_uarttxbuffer, /* buffer */
|
||||
},
|
||||
{ /* recv */
|
||||
{ 1 }, /* sem */
|
||||
0, /* head */
|
||||
0, /* tail */
|
||||
CONFIG_UART_RXBUFSIZE, /* size */
|
||||
g_uartrxbuffer, /* buffer */
|
||||
},
|
||||
&g_uart_ops, /* ops */
|
||||
NULL, /* priv */
|
||||
};
|
||||
|
||||
/****************************************************************************
|
||||
* Private Functions
|
||||
****************************************************************************/
|
||||
|
||||
/****************************************************************************
|
||||
* Name: up_setup
|
||||
*
|
||||
* Description:
|
||||
* Configure the UART baud, bits, parity, fifos, etc. This
|
||||
* method is called the first time that the serial port is
|
||||
* opened.
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
static int up_setup(struct uart_dev_s *dev)
|
||||
{
|
||||
outp(RESET, 0);
|
||||
outp(CONTROL, ctrl);
|
||||
outp(BAUD, baud);
|
||||
|
||||
return OK;
|
||||
}
|
||||
|
||||
/****************************************************************************
|
||||
* Name: up_shutdown
|
||||
*
|
||||
* Description:
|
||||
* Disable the UART. This method is called when the serial
|
||||
* port is closed
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
static void up_shutdown(struct uart_dev_s *dev)
|
||||
{
|
||||
}
|
||||
|
||||
/****************************************************************************
|
||||
* Name: up_attach
|
||||
*
|
||||
* Description:
|
||||
* Configure the UART to operation in interrupt driven mode. This method is
|
||||
* called when the serial port is opened. Normally, this is just after the
|
||||
* setup() method is called, however, the serial console may operate in a
|
||||
* non-interrupt driven mode during the boot phase.
|
||||
*
|
||||
* RX and TX interrupts are not enabled by the attach method (unless the
|
||||
* hardware supports multiple levels of interrupt enabling). The RX and TX
|
||||
* interrupts are not enabled until the txint() and rxint() methods are called.
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
static int up_attach(struct uart_dev_s *dev)
|
||||
{
|
||||
// SDCC complains here
|
||||
// *((void (*)()) XMIT_INT_VECTOR) = rs232_xmitisr;
|
||||
// *((void (*)()) RECV_INT_VECTOR) = rs232_recvisr;
|
||||
*((int *) XMIT_INT_VECTOR) = (int) rs232_xmitisr;
|
||||
*((int *) RECV_INT_VECTOR) = (int) rs232_recvisr;
|
||||
|
||||
*(char *)WRINTMASK_SHADOW &= ~(MASK_ERR_INT | MASK_XMIT_INT);
|
||||
outp(WRINTMASK, *(char *)WRINTMASK_SHADOW |= MASK_RECV_INT);
|
||||
|
||||
return OK;
|
||||
}
|
||||
|
||||
/****************************************************************************
|
||||
* Name: up_detach
|
||||
*
|
||||
* Description:
|
||||
* Detach UART interrupts. This method is called when the serial port is
|
||||
* closed normally just before the shutdown method is called. The exception is
|
||||
* the serial console which is never shutdown.
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
static void up_detach(struct uart_dev_s *dev)
|
||||
{
|
||||
outp(WRINTMASK, *(char *)WRINTMASK_SHADOW &= ~(MASK_ERR_INT | MASK_RECV_INT | MASK_XMIT_INT));
|
||||
*((int *) XMIT_INT_VECTOR) = 0x35fa;
|
||||
*((int *) RECV_INT_VECTOR) = 0x35fa;
|
||||
}
|
||||
|
||||
/****************************************************************************
|
||||
* Name: up_ioctl
|
||||
*
|
||||
* Description:
|
||||
* All ioctl calls will be routed through this method
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
static int up_ioctl(struct file *filep, int cmd, unsigned long arg)
|
||||
{
|
||||
*get_errno_ptr() = ENOTTY;
|
||||
return ERROR;
|
||||
}
|
||||
|
||||
/****************************************************************************
|
||||
* Name: up_receive
|
||||
*
|
||||
* Description:
|
||||
* Called (usually) from the interrupt level to receive one
|
||||
* character from the UART. Error bits associated with the
|
||||
* receipt are provided in the return 'status'.
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
static int up_receive(struct uart_dev_s *dev, uint32_t *status)
|
||||
{
|
||||
// uint8_t ch = z80_lowputc();
|
||||
|
||||
*status = 0;
|
||||
return ch;
|
||||
}
|
||||
|
||||
/****************************************************************************
|
||||
* Name: up_rxint
|
||||
*
|
||||
* Description:
|
||||
* Call to enable or disable RX interrupts
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
static void up_rxint(struct uart_dev_s *dev, bool enable)
|
||||
{
|
||||
}
|
||||
|
||||
/****************************************************************************
|
||||
* Name: up_rxavailable
|
||||
*
|
||||
* Description:
|
||||
* Return true if the receive fifo is not empty
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
static bool up_rxavailable(struct uart_dev_s *dev)
|
||||
{
|
||||
return true;
|
||||
}
|
||||
|
||||
/****************************************************************************
|
||||
* Name: up_send
|
||||
*
|
||||
* Description:
|
||||
* This method will send one byte on the UART
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
static void up_send(struct uart_dev_s *dev, int ch)
|
||||
{
|
||||
z80_lowputc(ch);
|
||||
}
|
||||
|
||||
/****************************************************************************
|
||||
* Name: up_txint
|
||||
*
|
||||
* Description:
|
||||
* Call to enable or disable TX interrupts
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
static void up_txint(struct uart_dev_s *dev, bool enable)
|
||||
{
|
||||
}
|
||||
|
||||
/****************************************************************************
|
||||
* Name: up_txready
|
||||
*
|
||||
* Description:
|
||||
* Return true if the transmit fifo is not full
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
static bool up_txready(struct uart_dev_s *dev)
|
||||
{
|
||||
return true;
|
||||
}
|
||||
|
||||
/****************************************************************************
|
||||
* Name: up_txempty
|
||||
*
|
||||
* Description:
|
||||
* Return true if the transmit fifo is empty
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
static bool up_txempty(struct uart_dev_s *dev)
|
||||
{
|
||||
return true;
|
||||
}
|
||||
|
||||
/****************************************************************************
|
||||
* Public Functions
|
||||
****************************************************************************/
|
||||
|
||||
/****************************************************************************
|
||||
* Name: up_serialinit
|
||||
*
|
||||
* Description:
|
||||
* Performs the low level UART initialization early in
|
||||
* debug so that the serial console will be available
|
||||
* during bootup. This must be called before up_serialinit.
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
void up_earlyserialinit(void)
|
||||
{
|
||||
}
|
||||
|
||||
/****************************************************************************
|
||||
* Name: up_serialinit
|
||||
*
|
||||
* Description:
|
||||
* Register serial ports. This assumes
|
||||
* that up_earlyserialinit was called previously.
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
void up_serialinit(void)
|
||||
{
|
||||
(void)uart_register("/dev/console", &g_uartport);
|
||||
(void)uart_register("/dev/ttyS0", &g_uartport);
|
||||
}
|
||||
#endif /* USE_SERIALDRIVER */
|
||||
|
||||
/****************************************************************************
|
||||
* Name: up_putc
|
||||
*
|
||||
* Description:
|
||||
* Provide priority, low-level access to support OS debug
|
||||
* writes
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
int up_putc(int ch)
|
||||
{
|
||||
z80_lowputc(ch);
|
||||
return 0;
|
||||
}
|
||||
@@ -0,0 +1,94 @@
|
||||
/****************************************************************************
|
||||
* configs/xtrs/src/xtr_timerisr.c
|
||||
*
|
||||
* Copyright (C) 2008-2009 Gregory Nutt. All rights reserved.
|
||||
* Author: Gregory Nutt <gnutt@nuttx.org>
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions
|
||||
* are met:
|
||||
*
|
||||
* 1. Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
|
||||
* 2. Redistributions in binary form must reproduce the above copyright
|
||||
* notice, this list of conditions and the following disclaimer in
|
||||
* the documentation and/or other materials provided with the
|
||||
* distribution.
|
||||
* 3. Neither the name NuttX nor the names of its contributors may be
|
||||
* used to endorse or promote products derived from this software
|
||||
* without specific prior written permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
||||
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
||||
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
|
||||
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
|
||||
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
|
||||
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
|
||||
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
|
||||
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
|
||||
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
||||
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
|
||||
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
||||
* POSSIBILITY OF SUCH DAMAGE.
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
/****************************************************************************
|
||||
* Included Files
|
||||
****************************************************************************/
|
||||
|
||||
#include <nuttx/config.h>
|
||||
|
||||
#include <debug.h>
|
||||
|
||||
#include <nuttx/arch.h>
|
||||
|
||||
#include "clock_internal.h"
|
||||
#include "up_internal.h"
|
||||
|
||||
/****************************************************************************
|
||||
* Definitions
|
||||
****************************************************************************/
|
||||
|
||||
/****************************************************************************
|
||||
* Private Types
|
||||
****************************************************************************/
|
||||
|
||||
/****************************************************************************
|
||||
* Private Function Prototypes
|
||||
****************************************************************************/
|
||||
|
||||
/****************************************************************************
|
||||
* Global Functions
|
||||
****************************************************************************/
|
||||
|
||||
/****************************************************************************
|
||||
* Function: up_timerisr
|
||||
*
|
||||
* Description:
|
||||
* The timer ISR will perform a variety of services for various portions of
|
||||
* the system.
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
int up_timerisr(int irq, FAR chipreg_t *regs)
|
||||
{
|
||||
/* Process timer interrupt */
|
||||
|
||||
sched_process_timer();
|
||||
return 0;
|
||||
}
|
||||
|
||||
/****************************************************************************
|
||||
* Function: up_timerinit
|
||||
*
|
||||
* Description:
|
||||
* This function is called during start-up to initialize the timer
|
||||
* interrupt.
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
void up_timerinit(void)
|
||||
{
|
||||
/* The timer interrupt was attached in up_irqinitialize -- see comments there */
|
||||
}
|
||||
@@ -0,0 +1,276 @@
|
||||
;**************************************************************************
|
||||
; configs/xtrs/src/xtrs_head.asm
|
||||
;
|
||||
; Copyright (C) 2008-2009 Gregory Nutt. All rights reserved.
|
||||
; Author: Gregory Nutt <gnutt@nuttx.org>
|
||||
;
|
||||
; Redistribution and use in source and binary forms, with or without
|
||||
; modification, are permitted provided that the following conditions
|
||||
; are met:
|
||||
;
|
||||
; 1. Redistributions of source code must retain the above copyright
|
||||
; notice, this list of conditions and the following disclaimer.
|
||||
; 2. Redistributions in binary form must reproduce the above copyright
|
||||
; notice, this list of conditions and the following disclaimer in
|
||||
; the documentation and/or other materials provided with the
|
||||
; distribution.
|
||||
; 3. Neither the name NuttX nor the names of its contributors may be
|
||||
; used to endorse or promote products derived from this software
|
||||
; without specific prior written permission.
|
||||
;
|
||||
; THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
||||
; "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
||||
; LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
|
||||
; FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
|
||||
; COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
|
||||
; INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
|
||||
; BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
|
||||
; OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
|
||||
; AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
||||
; LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
|
||||
; ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
||||
; POSSIBILITY OF SUCH DAMAGE.
|
||||
;
|
||||
;**************************************************************************
|
||||
|
||||
.title NuttX for the Z80
|
||||
.module xtrs_head
|
||||
|
||||
;**************************************************************************
|
||||
; Constants
|
||||
;**************************************************************************
|
||||
|
||||
; Register save area layout
|
||||
|
||||
XCPT_I == 0 ; Offset 0: Saved I w/interrupt state in parity
|
||||
XCPT_BC == 2 ; Offset 1: Saved BC register
|
||||
XCPT_DE == 4 ; Offset 2: Saved DE register
|
||||
XCPT_IX == 6 ; Offset 3: Saved IX register
|
||||
XCPT_IY == 8 ; Offset 4: Saved IY register
|
||||
XCPT_SP == 10 ; Offset 5: Offset to SP at time of interrupt
|
||||
XCPT_HL == 12 ; Offset 6: Saved HL register
|
||||
XCPT_AF == 14 ; Offset 7: Saved AF register
|
||||
XCPT_PC == 16 ; Offset 8: Offset to PC at time of interrupt
|
||||
|
||||
; Default stack base (needs to be fixed)
|
||||
|
||||
.include "asm_mem.h"
|
||||
|
||||
;**************************************************************************
|
||||
; Global symbols used
|
||||
;**************************************************************************
|
||||
|
||||
.globl _os_start ; OS entry point
|
||||
.globl _up_doirq ; Interrupt decoding logic
|
||||
|
||||
;**************************************************************************
|
||||
; System start logic
|
||||
;**************************************************************************
|
||||
|
||||
_up_reset:
|
||||
; Set up the stack pointer at the location determined the Makefile
|
||||
; and stored in asm_mem.h
|
||||
|
||||
ld SP, #CONFIG_STACK_END ; Set stack pointer
|
||||
|
||||
; Performed initialization unique to the SDCC toolchain
|
||||
|
||||
call gsinit ; Initialize the data section
|
||||
|
||||
; Copy the reset vectors
|
||||
|
||||
ld hl, #_up_rstvectors ; code for RAM
|
||||
ld de, #0x4000 ; move it here
|
||||
ld bc, #3*7 ; 7 vectors / 3 bytes each
|
||||
ldir
|
||||
|
||||
; Then start NuttX
|
||||
|
||||
call _os_start ; jump to the OS entry point
|
||||
|
||||
; NuttX will never return, but just in case...
|
||||
|
||||
_up_halt::
|
||||
halt ; We should never get here
|
||||
jp _up_halt
|
||||
|
||||
; Data to copy to address 0x4000
|
||||
|
||||
_up_rstvectors:
|
||||
jp _up_rst1 ; 0x4000 : RST 1
|
||||
jp _up_rst2 ; 0x4003 : RST 2
|
||||
jp _up_rst3 ; 0x4006 : RST 3
|
||||
jp _up_rst4 ; 0x4009 : RST 4
|
||||
jp _up_rst5 ; 0x400c : RST 5
|
||||
jp _up_rst6 ; 0x400f : RST 6
|
||||
jp _up_rst7 ; 0x4012 : RST 7
|
||||
|
||||
;**************************************************************************
|
||||
; Other reset handlers
|
||||
;
|
||||
; Interrupt mode 1 behavior:
|
||||
;
|
||||
; 1. M1 cycle: 7 ticks
|
||||
; Acknowledge interrupt and decrements SP
|
||||
; 2. M2 cycle: 3 ticks
|
||||
; Writes the MS byte of the PC onto the stack and decrements SP
|
||||
; 3. M3 cycle: 3 ticks
|
||||
; Writes the LS byte of the PC onto the stack and sets the PC to 0x0038.
|
||||
;
|
||||
;**************************************************************************
|
||||
|
||||
_up_rst1: ; RST 1
|
||||
; Save AF on the stack, set the interrupt number and jump to the
|
||||
; common reset handling logic.
|
||||
; Offset 8: Return PC is already on the stack
|
||||
push af ; Offset 7: AF (retaining flags)
|
||||
ld a, #1 ; 1 = Z80_RST1
|
||||
jr _up_rstcommon ; Remaining RST handling is common
|
||||
|
||||
_up_rst2: ; RST 2
|
||||
; Save AF on the stack, set the interrupt number and jump to the
|
||||
; common reset handling logic.
|
||||
; Offset 8: Return PC is already on the stack
|
||||
push af ; Offset 7: AF (retaining flags)
|
||||
ld a, #2 ; 2 = Z80_RST2
|
||||
jr _up_rstcommon ; Remaining RST handling is common
|
||||
|
||||
_up_rst3: ; RST 3
|
||||
; Save AF on the stack, set the interrupt number and jump to the
|
||||
; common reset handling logic.
|
||||
; Offset 8: Return PC is already on the stack
|
||||
push af ; Offset 7: AF (retaining flags)
|
||||
ld a, #3 ; 1 = Z80_RST3
|
||||
jr _up_rstcommon ; Remaining RST handling is common
|
||||
|
||||
_up_rst4: ; RST 4
|
||||
; Save AF on the stack, set the interrupt number and jump to the
|
||||
; common reset handling logic.
|
||||
; Offset 8: Return PC is already on the stack
|
||||
push af ; Offset 7: AF (retaining flags)
|
||||
ld a, #4 ; 1 = Z80_RST4
|
||||
jr _up_rstcommon ; Remaining RST handling is common
|
||||
|
||||
_up_rst5: ; RST 5
|
||||
; Save AF on the stack, set the interrupt number and jump to the
|
||||
; common reset handling logic.
|
||||
; Offset 8: Return PC is already on the stack
|
||||
push af ; Offset 7: AF (retaining flags)
|
||||
ld a, #5 ; 1 = Z80_RST5
|
||||
jr _up_rstcommon ; Remaining RST handling is common
|
||||
|
||||
_up_rst6: ; RST 6
|
||||
; Save AF on the stack, set the interrupt number and jump to the
|
||||
; common reset handling logic.
|
||||
; Offset 8: Return PC is already on the stack
|
||||
push af ; Offset 7: AF (retaining flags)
|
||||
ld a, #6 ; 1 = Z80_RST6
|
||||
jr _up_rstcommon ; Remaining RST handling is common
|
||||
|
||||
_up_rst7: ; RST 7
|
||||
; Save AF on the stack, set the interrupt number and jump to the
|
||||
; common reset handling logic.
|
||||
; Offset 8: Return PC is already on the stack
|
||||
push af ; Offset 7: AF (retaining flags)
|
||||
ld a, #7 ; 7 = Z80_RST7
|
||||
jr _up_rstcommon ; Remaining RST handling is common
|
||||
|
||||
;**************************************************************************
|
||||
; Common Interrupt handler
|
||||
;**************************************************************************
|
||||
|
||||
_up_rstcommon:
|
||||
; Create a register frame. SP points to top of frame + 4, pushes
|
||||
; decrement the stack pointer. Already have
|
||||
;
|
||||
; Offset 8: Return PC is already on the stack
|
||||
; Offset 7: AF (retaining flags)
|
||||
;
|
||||
; IRQ number is in A
|
||||
|
||||
push hl ; Offset 6: HL
|
||||
ld hl, #(3*2) ; HL is the value of the stack pointer before
|
||||
add hl, sp ; the interrupt occurred
|
||||
push hl ; Offset 5: Stack pointer
|
||||
push iy ; Offset 4: IY
|
||||
push ix ; Offset 3: IX
|
||||
push de ; Offset 2: DE
|
||||
push bc ; Offset 1: BC
|
||||
|
||||
ld b, a ; Save the reset number in B
|
||||
ld a, i ; Parity bit holds interrupt state
|
||||
push af ; Offset 0: I with interrupt state in parity
|
||||
di
|
||||
|
||||
; Call the interrupt decode logic. SP points to the beggining of the reg structure
|
||||
|
||||
ld hl, #0 ; Argument #2 is the beginning of the reg structure
|
||||
add hl, sp ;
|
||||
push hl ; Place argument #2 at the top of stack
|
||||
push bc ; Argument #1 is the Reset number
|
||||
inc sp ; (make byte sized)
|
||||
call _up_doirq ; Decode the IRQ
|
||||
|
||||
; On return, HL points to the beginning of the reg structure to restore
|
||||
; Note that (1) the arguments pushed on the stack are not popped, and (2) the
|
||||
; original stack pointer is lost. In the normal case (no context switch),
|
||||
; HL will contain the value of the SP before the arguments wer pushed.
|
||||
|
||||
ld sp, hl ; Use the new stack pointer
|
||||
|
||||
; Restore registers. HL points to the beginning of the reg structure to restore
|
||||
|
||||
ex af, af' ; Select alternate AF
|
||||
pop af ; Offset 0: AF' = I with interrupt state in parity
|
||||
ex af, af' ; Restore original AF
|
||||
pop bc ; Offset 1: BC
|
||||
pop de ; Offset 2: DE
|
||||
pop ix ; Offset 3: IX
|
||||
pop iy ; Offset 4: IY
|
||||
exx ; Use alternate BC/DE/HL
|
||||
ld hl, #-2 ; Offset of SP to account for ret addr on stack
|
||||
pop de ; Offset 5: HL' = Stack pointer after return
|
||||
add hl, de ; HL = Stack pointer value before return
|
||||
exx ; Restore original BC/DE/HL
|
||||
pop hl ; Offset 6: HL
|
||||
pop af ; Offset 7: AF
|
||||
|
||||
; Restore the stack pointer
|
||||
|
||||
exx ; Use alternate BC/DE/HL
|
||||
ld sp, hl ; Set SP = saved stack pointer value before return
|
||||
exx ; Restore original BC/DE/HL
|
||||
|
||||
; Restore interrupt state
|
||||
|
||||
ex af, af' ; Recover interrupt state
|
||||
jp po, nointenable ; Odd parity, IFF2=0, means disabled
|
||||
ex af, af' ; Restore AF (before enabling interrupts)
|
||||
ei ; yes
|
||||
reti
|
||||
nointenable::
|
||||
ex af, af' ; Restore AF
|
||||
reti
|
||||
|
||||
;**************************************************************************
|
||||
; Ordering of segments for the linker (SDCC only)
|
||||
;**************************************************************************
|
||||
|
||||
.area _HOME
|
||||
.area _CODE
|
||||
.area _GSINIT
|
||||
.area _GSFINAL
|
||||
|
||||
.area _DATA
|
||||
.area _BSS
|
||||
.area _HEAP
|
||||
|
||||
;**************************************************************************
|
||||
; Global data initialization logic (SDCC only)
|
||||
;**************************************************************************
|
||||
|
||||
.area _GSINIT
|
||||
gsinit::
|
||||
.area _GSFINAL
|
||||
ret
|
||||
|
||||
Reference in New Issue
Block a user