int cbm2rom_load_kernal(const char *rom_name)
{
if (!rom_loaded)
return 0; /* init not far enough */
/* De-initialize kbd-buf, autostart and tape stuff here before
reloading the ROM the traps are installed in. */
kbdbuf_init(0, 0, 0, 0);
autostart_init(0, 0, 0, 0, 0, 0);
tape_init(&tapeinit);
/* Load Kernal ROM. */
if (!util_check_null_string(rom_name)) {
if (sysfile_load(rom_name, mem_rom + 0xe000, 0x2000, 0x2000) < 0) {
log_error(cbm2rom_log, "Couldn't load ROM `%s'.", rom_name);
return -1;
}
}
return cbm2rom_checksum();
}
static int mem_read_rom_snapshot_module(snapshot_t *p)
{
BYTE vmajor, vminor;
snapshot_module_t *m;
BYTE config;
int i, trapfl;
m = snapshot_module_open(p, module_rom_name, &vmajor, &vminor);
if (m == NULL)
return 0; /* optional */
if (vmajor != CBM2ROM_DUMP_VER_MAJOR) {
snapshot_module_close(m);
return -1;
}
/* disable traps before loading the ROM */
resources_get_int("VirtualDevices", &trapfl);
resources_set_int("VirtualDevices", 0);
SMR_B(m, &config);
/* kernal */
SMR_BA(m, mem_rom + 0xe000, 0x2000);
/* basic */
SMR_BA(m, mem_rom + 0x8000, 0x4000);
/* chargen */
if (config & 32) {
SMR_BA(m, mem_chargen_rom, 0x1000);
} else {
SMR_BA(m, mem_chargen_rom, 0x0800);
SMR_BA(m, mem_chargen_rom + 0x1000, 0x0800);
/* Inverted chargen into second half. This is a hardware feature. */
for (i = 0; i < 2048; i++) {
mem_chargen_rom[i + 2048] = mem_chargen_rom[i] ^ 0xff;
mem_chargen_rom[i + 6144] = mem_chargen_rom[i + 4096] ^ 0xff;
}
}
if (config & 2) {
SMR_BA(m, mem_rom + 0x1000, 0x1000);
}
if (config & 4) {
SMR_BA(m, mem_rom + 0x2000, 0x2000);
}
if (config & 8) {
SMR_BA(m, mem_rom + 0x4000, 0x2000);
}
if (config & 16) {
SMR_BA(m, mem_rom + 0x6000, 0x2000);
}
log_warning(cbm2_snapshot_log,
"Dumped Romset files and saved settings will "
"represent\nthe state before loading the snapshot!");
cbm2rom_checksum();
/* enable traps again when necessary */
resources_set_int("VirtualDevices", trapfl);
snapshot_module_close(m);
return 0;
}
