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/*
* a2, an Apple II emulator in C
* (c) Copyright 1990 by Rich Skrenta
*
* Command line interface written by Tom Markson
*
* Distribution agreement:
*
* You may freely copy or redistribute this software, so long
* as there is no profit made from its use, sale, trade or
* reproduction. You may not change this copyright notice,
* and it must be included prominently in any copy made.
*
* Send emulator related mail to: skrenta@blekko.commodore.com
* skrenta@blekko.uucp
*/
#include <stdio.h>
#include "a2.h"
#define BSIZE 512 /* block size */
#define D1SIZE 280 /* Size of disk 1 */
#define D2SIZE 1024 /* Size of disk 2 */
/*
* Prodos to DOS 3.3 block mapping
*/
int conv1[] = { 0x00, 0x0D, 0x0B, 0x09, 0x07, 0x05, 0x03, 0x01 };
int conv2[] = { 0x0E, 0x0C, 0x0A, 0x08, 0x06, 0x04, 0x02, 0x0F };
proformat()
{
if (write_prot[drive]) {
C = 1;
A = 0x2B; /* Write protected */
return;
}
C = 0;
A = 0;
}
proread()
{
int block;
unsigned short ptr;
int track, sector;
char s[50];
block = join(mem[0x46], mem[0x47]);
ptr = join(mem[0x44], mem[0x45]);
sprintf(s, "proread b=%d", block);
info(s);
track = block / 8;
sector = conv1[block % 8];
read_disk(track, sector, &mem[ptr]);
ptr += 0x100;
sector = conv2[block % 8];
read_disk(track, sector, &mem[ptr]);
C = 0;
A = 0;
}
prowrite()
{
int block;
unsigned short ptr;
int track;
int sector;
char s[50];
if (write_prot[drive]) {
C = 1;
A = 0x2B; /* Write protected */
return;
}
block = join(mem[0x46], mem[0x47]);
ptr = join(mem[0x44], mem[0x45]);
sprintf(s, "prowrite b=%d", block);
info(s);
track = block / 8;
sector = conv1[block % 8];
write_disk(track, sector, &mem[ptr]);
ptr += 0x100;
sector = conv2[block % 8];
write_disk(track, sector, &mem[ptr]);
C = 0;
A = 0;
}
prostatus()
{
C = 0;
A = 0;
Y = high(D1SIZE);
X = low(D1SIZE);
}
prodos()
{
if (mem[0x43] < 0x80)
drive = 0;
else
drive = 1;
if (disk[drive] < 0) {
C = 1;
A = 0x27; /* IO Error */
} else switch (mem[0x42]) {
case 0:
prostatus();
break;
case 1:
proread();
break;
case 2:
prowrite();
break;
case 3:
proformat();
break;
}
DO_RTS;
}
These are the contents of the former NiCE NeXT User Group NeXTSTEP/OpenStep software archive, currently hosted by Netfuture.ch.