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PLASMA
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Add some terminal control to Apple1 emulation

This commit is contained in:
David Schmenk 2024-03-12 13:57:15 -07:00
parent 82a1632bfd
commit 31d5b8a5ec
2 changed files with 33 additions and 23 deletions
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53
src/lib6502/a1cffa.c
View File

@ -1,7 +1,7 @@
/* run6502.c -- 6502 emulator shell -*- C -*- */
/* run6502.c -- 6502 emulator shell -*- C -*- */
/* Copyright (c) 2005 Ian Piumarta
*
*
* All rights reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
@ -36,7 +36,7 @@
#include "config.h"
#include "lib6502.h"
#define VERSION PACKAGE_NAME " " PACKAGE_VERSION " " PACKAGE_COPYRIGHT
#define VERSION PACKAGE_NAME " " PACKAGE_VERSION " " PACKAGE_COPYRIGHT
typedef uint8_t byte;
typedef uint16_t word;
@ -50,12 +50,12 @@ void pfail(const char *msg)
exit(1);
}
#define rts \
{ \
word pc; \
pc = mpu->memory[++mpu->registers->s + 0x100]; \
pc |= mpu->memory[++mpu->registers->s + 0x100] << 8; \
return pc + 1; \
#define rts \
{ \
word pc; \
pc = mpu->memory[++mpu->registers->s + 0x100]; \
pc |= mpu->memory[++mpu->registers->s + 0x100] << 8; \
return pc + 1; \
}
int save(M6502 *mpu, word address, unsigned length, const char *path)
@ -108,10 +108,10 @@ int cffa1(M6502 *mpu, word address, byte data)
switch (mpu->registers->x)
{
case 0x02: /* quit */
case 0x02: /* quit */
exit(0);
break;
case 0x14: /* find dir entry */
case 0x14: /* find dir entry */
addr = mpu->memory[CFFAFileName] | (mpu->memory[CFFAFileName + 1] << 8);
memset(filename, 0, 64);
strncpy(filename, (char *)(mpu->memory + addr + 1), mpu->memory[addr]);
@ -128,7 +128,7 @@ int cffa1(M6502 *mpu, word address, byte data)
else
mpu->registers->a = -1;
break;
case 0x22: /* load file */
case 0x22: /* load file */
addr = mpu->memory[CFFAFileName] | (mpu->memory[CFFAFileName + 1] << 8);
memset(filename, 0, 64);
strncpy(filename, (char *)(mpu->memory + addr + 1), mpu->memory[addr]);
@ -138,27 +138,34 @@ int cffa1(M6502 *mpu, word address, byte data)
break;
default:
{
char state[64];
char state[64];
fprintf(stderr, "Unimplemented CFFA function: %02X\n", mpu->registers->x);
M6502_dump(mpu, state);
fflush(stdout);
fprintf(stderr, "\nCFFA1 %s\n", state);
pfail("ABORT");
M6502_dump(mpu, state);
fflush(stdout);
fprintf(stderr, "\nCFFA1 %s\n", state);
pfail("ABORT");
}
break;
}
rts;
}
int bye(M6502 *mpu, word addr, byte data) { exit(0); return 0; }
int cout(M6502 *mpu, word addr, byte data) { if (mpu->registers->a == 0x8D) putchar('\n'); putchar(mpu->registers->a & 0x7F); fflush(stdout); rts; }
int bye(M6502 *mpu, word addr, byte data) { exit(0); return 0; }
int cout(M6502 *mpu, word addr, byte data) { if (mpu->registers->a == 0x8D) putchar('\n'); putchar(mpu->registers->a & 0x7F); fflush(stdout); rts; }
unsigned keypending = 0;
unsigned char keypressed(void)
{
unsigned char cin;
unsigned char cin, cext[2];
if (read(STDIN_FILENO, &cin, 1) > 0)
{
if (cin == 0x1B) // Look for left arrow
{
if (read(STDIN_FILENO, cext, 2) == 2 && cext[0] == '[' && cext[1] == 'D')
cin = 0x08;
}
keypending = cin | 0x80;
}
return keypending & 0x80;
}
unsigned char keyin(void)
@ -173,9 +180,9 @@ unsigned char keyin(void)
}
int rd6820kbdctl(M6502 *mpu, word addr, byte data) { return keypressed(); }
int rd6820vidctl(M6502 *mpu, word addr, byte data) { return 0x00; }
int rd6820kbd(M6502 *mpu, word addr, byte data) { return keyin(); }
int rd6820vid(M6502 *mpu, word addr, byte data) { return 0x80; }
int wr6820vid(M6502 *mpu, word addr, byte data) { if (data == 0x8D) putchar('\n'); putchar(data & 0x7F); fflush(stdout); return 0; }
int rd6820kbd(M6502 *mpu, word addr, byte data) { return keyin(); }
int rd6820vid(M6502 *mpu, word addr, byte data) { return 0x80; }
int wr6820vid(M6502 *mpu, word addr, byte data) { if (data == 0x8D) putchar('\n'); putchar(data & 0x7F); fflush(stdout); return 0; }
int setTraps(M6502 *mpu)
{

3
src/vmsrc/apple/a1cmd.pla
View File

@ -788,6 +788,9 @@ def rdstr(prompt)#1
if ^inbuff
cout('\\')
cout(^(inbuff + ^inbuff))
cout($08); cout($08); cout($08) // backspace if supported
prstr(" ")
cout($08); cout($08); cout($08)
inbuff.0--
fin
break