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add all source from sourceforge napple1 2.2.1

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Nobuhiro Hatano 2012-06-18 01:39:18 +09:00
parent 5586a6403d
commit 17857df982
21 changed files with 3229 additions and 0 deletions
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napple1:
Nobu Hatano <nobuhatano@gmail.com>
Pom1:
John D. Corrado <jdcorrado@gmail.com>
Verhille Arnaud

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CHANGELOG
=========
2.2.1
- Fix leaking memory on fd of loadBasic() function
- Fix some coding style issue in memory.c and msgbuf.c
2.2
- Add Cygwin (with cygwin base, make, gcc4 and libncurses-dev) support
- Fix Hung after Hardreset.
2.1
- If a loading core has a value on the 0xF000 area, the mode
should be better change to 32K mode.
- Update SAMPLE_PROGRAMS file.
2.0
- Remove TODO list.
- Synchronize video output for ideal 60 Hz screen refresh.
- Remove terminalSpeed configuration. Now it is 60Hz only.
- Remove replica1 config in napple1.cfg and No more napple1.cfg.
- Mode change command filp 8K memory mode & 32K memory mode
- Delete unused charmap.rom
- Rename core/STARTREK to core/startrek
1.0
- Filename input for Load core.
- Confirmation to load basic to ram.
- Command list on the message buffer.
- Remove default core and basic.rom loading function.
- TODO file added.
0.6
- March 29, 2010
- Modify makefile as using macros for common options.
- Add #define _XOPEN_SOURCE 500 to prevent compile warning of usleep.
- Add filename input feature for 'D'ump core.
0.5
- March 25, 2010
- Fix time tic in m6502. To get milli sec current time, use gettimeofday.
- Wall option at compile. So, several fix in m6502.c to get rid of warnings.
0.4
- March 25, 2010
- Fix some descriptions in READE and SAMPLE_PROGRAMS
- Use independant ncurses windows for main screen and message buffer,
instead of a single stdscr. The new screen layoht is following.
During loading rom and core, printing some messages to the buffer.
+-----------------------------+
|(0,0) (0, 40)|
| screen |
| |
|(23,0) (23,40)|
+-----------------------------+
|(24,0) message buffer (24,40)|
+-----------------------------+
0.3
- March 21, 2010
- Update README
- Allow smaller lines/colums terminal
0.2
- March 18, 2010
- Delete automatic save memory function during quit.
- Shift + D "Dump core"
- Dump & Load core on file core/dumped
- Add sample core file in core directory
0.1
- March 16, 2010
- Fixed old program name nPom1 to napple1.
- napple1 now includes Pom1 rom.
- if napple1 started with normal mode, and if core file
isn't existing, load rom/basic.rom to ram 0xE000.
0.0
- March 15, 2010
- Derived from Pom1. First alpha release

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SAMPLE PROGRAMS
===============
STARTREK
--------
Original code is downloaded from http://www.brielcomputers.com/files/games.zip
How to start it.
./napple1
Shift + L (Load core)
Load core. Filename: startrek (core/startrek)
E2B3R (re-entry to BASIC)
RUN (start program in BASIC)
KRUSADER
--------
Replica1's assembler. It is in startrek rom also.
./napple1
Shift + L (Load core)
Load core. Filename: startrek (core/startrek)
F000R (cold start KRUSADER)

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rom/basic.rom Executable file
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/* napple1 ncurses Apple 1 emulator
* Copyright (C) 2008 Nobu Hatano
*
* Pom1 Apple 1 Emulator
* Copyright (C) 2000 Verhille Arnaud
* Copyright (C) 2006 John D. Corrado
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#include "m6502.h"
#include "pia6820.h"
#include "memory.h"
#include "keyboard.h"
#include "screen.h"
int handleInput(void)
{
char tmp;
tmp = '\0';
while ( (tmp = getch_screen()) == '\0' )
;
if (tmp == 'B') {
loadBasic();
resetPia6820();
resetM6502();
return 1;
} else if (tmp == 'L') {
loadCore();
resetPia6820();
resetM6502();
return 1;
} else if (tmp == 'D') {
dumpCore();
resetPia6820();
resetM6502();
return 1;
} else if (tmp == 'R') {
resetPia6820();
resetM6502();
return 1;
} else if (tmp == 'H') {
resetScreen();
resetPia6820();
resetMemory();
resetM6502();
return 1;
} else if (tmp == 'Q') {
return 0;
} else if (tmp == 'M') {
flipMode();
resetPia6820();
resetM6502();
return 1;
} else if (tmp == '\n') {
tmp = '\r';
} else if (tmp == '\b') {
tmp = 0x5f;
} else if (tmp >= 'a' && tmp <= 'z') {
tmp = tmp - 'a' + 'A';
}
writeKbd((unsigned char)(tmp + 0x80));
writeKbdCr(0xA7);
return 1;
}

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/* napple1 ncurses Apple 1 emulator
* Copyright (C) 2008 Nobu Hatano
*
* Pom1 Apple 1 Emulator
* Copyright (C) 2000 Verhille Arnaud
* Copyright (C) 2006 John D. Corrado
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
int handleInput(void);

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/* napple1 ncurses Apple 1 emulator
* Copyright (C) 2008 Nobu Hatano
*
* Pom1 Apple 1 Emulator
* Copyright (C) 2000 Verhille Arnaud
* Copyright (C) 2006 John D. Corrado
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
void startM6502(void);
void stopM6502(void);
void resetM6502(void);
void setSpeed(int freq, int synchroMillis);
void setIRQ(int state);
void setNMI(void);

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/* napple1 ncurses Apple 1 emulator
* Copyright (C) 2008 Nobu Hatano
*
* Pom1 Apple 1 Emulator
* Copyright (C) 2000 Verhille Arnaud
* Copyright (C) 2006 John D. Corrado
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#include <ncurses.h>
#include <stdlib.h>
#include "m6502.h"
#include "memory.h"
#include "keyboard.h"
#include "screen.h"
#include "msgbuf.h"
int main()
{
/* initialize ncurse */
initscr();
noecho();
cbreak();
attron(A_REVERSE);
init_screen();
init_msgbuf();
/* initialize apple1 screen */
resetScreen();
setSpeed(1000000, 50); /* 1M Hz. Sync emulation every 50 msec */
/* Load monitor rom */
if (!loadMonitor()) {
print_msgbuf("Failed loading rom/monitor.rom");
endwin();
return 0;
}
resetMemory();
/* start processor */
resetM6502();
startM6502();
atexit(stopM6502);
while (handleInput());
/* ending */
endwin();
return 0;
}

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# napple1 makefile
# Nobu Hatano <nobuhatano@gmail.com>
CC = gcc
CFLAGS = -Wall -ansi
THREAD = -lpthread
# Support Linux and Cygwin
OS = ${shell uname -o}
ifeq ($(OS), Cygwin)
CURSES = -lncurses -I/usr/include/ncurses
else
CURSES = -lncurses
endif
all: napple1
napple1: m6502.o memory.o pia6820.o screen.o keyboard.o main.o msgbuf.o
$(CC) $(CFLAGS) -o ../napple1 m6502.o memory.o pia6820.o screen.o msgbuf.o keyboard.o main.o $(THREAD) $(CURSES)
m6502.o: m6502.c m6502.h pia6820.h memory.h
$(CC) $(CFLAGS) -o m6502.o -c m6502.c $(THREAD)
memory.o: memory.c pia6820.h memory.h pia6820.h screen.h
$(CC) $(CFLAGS) -o memory.o -c memory.c
pia6820.o: pia6820.c pia6820.h screen.h
$(CC) $(CFLAGS) -o pia6820.o -c pia6820.c
screen.o: screen.c
$(CC) $(CFLAGS) -o screen.o -c screen.c $(CURSES)
msgbuf.o: msgbuf.c screen.h memory.h
$(CC) $(CFLAGS) -o msgbuf.o -c msgbuf.c $(CURSES)
keyboard.o: keyboard.c keyboard.h m6502.h pia6820.h memory.h screen.h
$(CC) $(CFLAGS) -o keyboard.o -c keyboard.c
main.o: main.c keyboard.h m6502.h screen.h msgbuf.h memory.h
$(CC) $(CFLAGS) -o main.o -c main.c $(CURSES)
clean:
-rm *.o
-rm ../napple1

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/* napple1 ncurses Apple 1 emulator
* Copyright (C) 2008 Nobu Hatano
*
* Pom1 Apple 1 Emulator
* Copyright (C) 2000 Verhille Arnaud
* Copyright (C) 2006 John D. Corrado
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
/*
* Memory maap of napple1
*
* Apple I 8K mode & napple1 64K mode, common usage
* -----------------------------------------------------------------------
* $0000 Ststem & User Space
* $0200 - $027F Input Buffer used by monitor
* $0FFF
* -----------------------------------------------------------------------
* $D010 KBD Keyboard input register. b7 is always 1 by hardware.
* Read KBD will automatcically clear KBDCR's b7.
* $D011 KBDCR When key is pressed, b7 is set by hardware.
* $D012 DSP Bit b6..b0 is output character for the terminal.
* Writing to DSP will set b7 by hardware.
* The termianl clear b7 after the character is accepted.
* $D013 DSPCR Unused.
* -----------------------------------------------------------------------
* $E000 Apple I Integer BASIC
* $E2B3 Re-entry address
* $EFFF
* -----------------------------------------------------------------------
* $FF00 Monitor
* $FFEF Echo
* $FFFF
* -----------------------------------------------------------------------
*/
/* Apple I 8K mode memory map
* ---------------------------------
* Start Type
* addr
* ---------------------------------
* $0000 4KB RAM
* $1000 unused
* $D010 Display and Keyboard I/O
* $D014 unused
* $E000 4KB RAM
* $F000 unused
* $FF00 256B ROM^ (Woz Monitor)
* ---------------------------------
* ^ ROM can be written by Load core
*/
/* napple I 32K mode memory map
* ---------------------------------
* Start Type
* addr
* ---------------------------------
* $0000 32K RAM
* $8000 unused
* $D010 Display and Keyboard I/O
* $D014 unused
* $E000 8K ROM^
* ---------------------------------
* ^ ROM can be written by Load core
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "pia6820.h"
#include "memory.h"
#include "screen.h"
#include "msgbuf.h"
#define MEMMAX 0xFFFF
static unsigned char mem[65536];
static int mode = 8; /* 8 = Apple I 8K mode, 32 = napple1 32K mode */
void flipMode(void)
{
if (mode == 8)
mode = 32;
else
mode = 8;
/* update message buffer */
print_msgbuf("");
}
int memMode(void)
{
return mode;
}
void loadBasic(void)
{
FILE *fd = fopen("rom/basic.rom", "rb");
char input[MSG_LEN_MAX +1];
if (!fd) {
gets_msgbuf("Failed to open rom/basic.rom: ", input);
return;
}
gets_msgbuf("Load basic.rom to ram? y/n: ", input);
if (input[0] == 'y') {
size_t s = fread(&mem[0xE000], 1, 4096, fd);
if (s) {
gets_msgbuf("Load completed: ", input);
} else {
gets_msgbuf("Load failed: ", input);
}
}
fclose(fd);
return;
}
int loadMonitor(void)
{
FILE *fd = fopen("rom/monitor.rom", "rb");
if (fd) {
fread(&mem[0xFF00], 1, 256, fd);
fclose(fd);
}
else{
return 0;
}
return 1;
}
void resetMemory(void)
{
if (memMode() > 8)
memset(mem, 0, 0xE000); /* rom is starting from 0xE000 */
else
memset(mem, 0, 0x10000 - 256); /* rom is within tail 256b */
}
unsigned char memRead(unsigned short address)
{
if (address == 0xD013)
return readDspCr();
if (address == 0xD012)
return readDsp();
if (address == 0xD011)
return readKbdCr();
if (address == 0xD010)
return readKbd();
return mem[address];
}
void memWrite(unsigned short address, unsigned char value)
{
if (address < 0x1000)
mem[address] = value;
else if (address < 0x8000 && (memMode() > 8) )
mem[address] = value;
else if (address == 0xD013)
writeDspCr(value);
else if (address == 0xD012)
writeDsp(value);
else if (address == 0xD011)
writeKbdCr(value);
else if (address == 0xD010)
writeKbd(value);
else if (address >= 0xE000 && address < 0xF000 && memMode() == 8)
mem[address] = value;
else
;
return;
}
void dumpCore(void)
{
int i;
FILE *fd;
char input[MSG_LEN_MAX +1];
char corename[5 + MSG_LEN_MAX +1]; /* 'core/' + input string */
gets_msgbuf("Dump core. Filename: ", input);
sprintf(corename, "core/%s", input);
fd = fopen(corename, "w");
for (i = 0; i <= MEMMAX; i++)
fputc(mem[i], fd);
fclose(fd);
gets_msgbuf("Dump core completed: ", input);
}
int loadCore(void)
{
FILE *fd;
char input[MSG_LEN_MAX +1];
char corename[5 + MSG_LEN_MAX +1]; /* 'core/' + input string */
size_t s = 0;
unsigned char buf[65536];
int i;
gets_msgbuf("Load core. Filename: ", input);
sprintf(corename, "core/%s", input);
fd = fopen(corename, "r");
if (fd) {
s = fread(&buf[0], 1, MEMMAX+1, fd);
fclose(fd);
}
if (s) {
gets_msgbuf("Load core completed: ", input);
} else {
gets_msgbuf("Failed to open core file: ", input);
return 0;
}
/* 0xF000 is unused area of 8K mode or
* ROM area of 32K mode. So, if 0xF000 has a value,
* The mode should better change to 32K mode.
*/
if ((buf[0xF000] != 0) && (memMode() == 8)) {
flipMode();
}
if (memMode() == 8) {
for (i = 0; i <= 0x0FFF; i++) mem[i] = buf[i];
for (i = 0xE000; i <= 0xEFFF; i++) mem[i] = buf[i];
for (i = 0xFF00; i <= 0xFFFF; i++) mem[i] = buf[i];
} else {
for (i = 0; i <= 0x7FFF; i++) mem[i] = buf[i];
for (i = 0xE000; i <= 0xFFFF; i++) mem[i] = buf[i];
}
return 1;
}

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/* Pom1 Apple 1 Emulator
* Copyright (C) 2000 Verhille Arnaud
* Copyright (C) 2006 John D. Corrado
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
void loadBasic(void);
int loadMonitor(void);
void resetMemory(void);
unsigned char memRead(unsigned short address);
void memWrite(unsigned short address, unsigned char value);
void dumpCore(void);
int loadCore(void);
int memMode(void);
void flipMode(void);

73
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/* napple1 ncurses Apple 1 emulator
* Copyright (C) 2008 Nobu Hatano
*
* Pom1 Apple 1 Emulator
* Copyright (C) 2000 Verhille Arnaud
* Copyright (C) 2006 John D. Corrado
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
* USA.
*/
/*
* Message buffer is a 1 line display of napple 1 system.
*/
#include <ncurses.h>
#include <string.h>
#include "screen.h"
#include "msgbuf.h"
#include "memory.h"
static WINDOW *msgbuf;
void print_msgbuf(char *s)
{
char msg[MSG_LEN_MAX + 1];
if ((int)strlen(s) < 1)
sprintf(msg,
"Basic Dump Load Reset Hard Quit Mode %2dK",
memMode());
else
sprintf(msg,
"%-40s",
s);
werase(msgbuf);
wprintw(msgbuf, msg);
wrefresh(msgbuf);
}
void init_msgbuf(void)
{
msgbuf = newwin(1, ncol, nrow, 0);
wattron(msgbuf, COLOR_PAIR(1) | A_REVERSE); /* 2 is black on green */
print_msgbuf("");
}
void gets_msgbuf(char *prompt, char *typed)
{
werase(msgbuf);
echo();
nocbreak();
wprintw(msgbuf, "%s", prompt);
wrefresh(msgbuf);
wgetnstr(msgbuf, typed, MSG_LEN_MAX);
noecho();
cbreak();
print_msgbuf("");
select_screen();
}

27
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/* napple1 ncurses Apple 1 emulator
* Copyright (C) 2008 Nobu Hatano
*
* Pom1 Apple 1 Emulator
* Copyright (C) 2000 Verhille Arnaud
* Copyright (C) 2006 John D. Corrado
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
* USA.
*/
void init_msgbuf(void);
void print_msgbuf(char *string);
void gets_msgbuf(char *prompt, char *typed);
#define MSG_LEN_MAX 40

104
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/* napple1 ncurses Apple 1 emulator
* Copyright (C) 2008 Nobu Hatano
*
* Pom1 Apple 1 Emulator
* Copyright (C) 2000 Verhille Arnaud
* Copyright (C) 2006 John D. Corrado
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#include "pia6820.h"
#include "screen.h"
static unsigned char _dspCr = 0, _dsp = 0, _kbdCr = 0, _kbd = 0;
static int kbdInterrups = 0, dspOutput = 0;
void resetPia6820(void)
{
kbdInterrups = dspOutput = 0;
_kbdCr = _dspCr = 0;
}
void setKdbInterrups(int b)
{
kbdInterrups = b;
}
int getKbdInterrups(void)
{
return kbdInterrups;
}
int getDspOutput(void)
{
return dspOutput;
}
void writeDspCr(unsigned char dspCr)
{
if (!dspOutput && dspCr >= 0x80)
dspOutput = 1;
else
_dspCr = dspCr;
}
void writeDsp(unsigned char dsp)
{
if (dsp >= 0x80)
dsp -= 0x80;
outputDsp(dsp);
_dsp = dsp;
}
void writeKbdCr(unsigned char kbdCr)
{
if (!kbdInterrups && kbdCr >= 0x80)
kbdInterrups = 1;
else
_kbdCr = kbdCr;
}
void writeKbd(unsigned char kbd)
{
_kbd = kbd;
}
unsigned char readDspCr(void)
{
return _dspCr;
}
unsigned char readDsp(void)
{
return _dsp;
}
unsigned char readKbdCr(void)
{
if (kbdInterrups && _kbdCr >= 0x80)
{
_kbdCr = 0;
return 0xA7;
}
return _kbdCr;
}
unsigned char readKbd(void)
{
return _kbd;
}

33
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/* napple1 ncurses Apple 1 emulator
* Copyright (C) 2008 Nobu Hatano
*
* Pom1 Apple 1 Emulator
* Copyright (C) 2000 Verhille Arnaud
* Copyright (C) 2006 John D. Corrado
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
void resetPia6820(void);
void setKdbInterrups(int b);
int getKbdInterrups(void);
int getDspOutput(void);
void writeDspCr(unsigned char dspCr);
void writeDsp(unsigned char dsp);
void writeKbdCr(unsigned char kbdCr);
void writeKbd(unsigned char kbd);
unsigned char readDspCr(void);
unsigned char readDsp(void);
unsigned char readKbdCr(void);
unsigned char readKbd(void);

183
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/* napple1 ncurses Apple 1 emulator
* Copyright (C) 2008 Nobu Hatano
*
* Pom1 Apple 1 Emulator
* Copyright (C) 2000 Verhille Arnaud
* Copyright (C) 2006 John D. Corrado
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
* USA.
*/
/** screen.c
* Screen is a vitrual display of Apple I
*/
#define _XOPEN_SOURCE 500
#include <unistd.h>
#include <string.h>
#include <ncurses.h>
#include <sys/time.h>
#include "screen.h"
static unsigned char screenTbl[40 * 24];
static int indexX, indexY;
static WINDOW *screen;
static long long interval_start; /* interval start time in u sec */
char getch_screen(void)
{
return (char)wgetch(screen);
}
void init_screen(void)
{
/* Determine main screen window size.
* To reserve bottom 1 line for the message buffer,
* -1 from $LINES
*/
if ((nrow = (LINES - 1)) > 24 || nrow < 1)
nrow = 24;
if ((ncol = COLS) > 40 || ncol < 1)
ncol = 40;
/* Create 'screen' window */
screen = newwin(nrow, ncol, 0, 0);
/* Set screen window color as Green On Black */
if (has_colors())
{
start_color();
init_pair(1, COLOR_GREEN, COLOR_BLACK);
wattron(screen, COLOR_PAIR(1));
}
}
void updateScreen(void)
{
int i, j;
unsigned char c;
werase(screen);
for (j = 0; j < nrow; ++j)
{
for (i = 0; i < ncol; ++i)
{
wmove(screen, j, i);
c = screenTbl[j * ncol + i];
if (c < '!')
c = ' ';
wprintw(screen, "%c", c);
}
}
wmove(screen, indexY, indexX); /* put cursor */
wrefresh(screen);
}
void resetScreen(void)
{
indexX = indexY = 0;
memset(screenTbl, 0, nrow * ncol);
updateScreen();
}
static void synchronizeOutput(void)
{
int processed; /* processed real time in u sec */
int delay; /* delay u sec to be added to real time */
struct timeval t;
gettimeofday(&t, NULL);
processed = (int)(t.tv_usec + t.tv_sec * 1000000
- interval_start);
if (processed < 0)
processed = 0;
/* Video output refreshes screen by 60 Hz.
* In real time, it takes 1 sec / 60 hz.
* So, 1000000 usec / 60 hz.
*/
delay = 1000000 / 60 - processed;
if (delay < 0)
delay = 0;
usleep((unsigned int)delay);
gettimeofday(&t, NULL);
interval_start = (long long)(t.tv_usec + t.tv_sec * 1000000);
}
static void newLine(void)
{
int i;
for (i = 0; i < (nrow-1) ; ++i)
memcpy(&screenTbl[i * ncol],
&screenTbl[(i + 1) * ncol],
ncol);
memset(&screenTbl[ncol * (nrow-1)], 0, ncol);
}
void outputDsp(unsigned char dsp)
{
switch (dsp)
{
case 0x5F:
if (indexX == 0)
{
indexY--;
indexX = ncol-1;
}
else
indexX--;
screenTbl[indexY * ncol + indexX] = 0;
break;
case 0x0A:
case 0x0D:
indexX = 0;
indexY++;
break;
case 0x00:
case 0x7F:
break;
default:
screenTbl[indexY * ncol + indexX] = dsp;
indexX++;
break;
}
if (indexX == ncol)
{
indexX = 0;
indexY++;
}
if (indexY == nrow)
{
newLine();
indexY--;
}
updateScreen();
synchronizeOutput();
}
void select_screen(void)
{
touchwin(screen);
wrefresh(screen);
}

29
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/* napple1 ncurses Apple 1 emulator
* Copyright (C) 2008 Nobu Hatano
*
* Pom1 Apple 1 Emulator
* Copyright (C) 2000 Verhille Arnaud
* Copyright (C) 2006 John D. Corrado
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
void init_screen(void);
void resetScreen(void);
void outputDsp(unsigned char dsp);
char getch_screen(void);
void select_screen(void);
int nrow, ncol;