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AHA-1542CP and ISA PnP memory range fixes, fixes AHA-1542CP on Packard Bell PB450.

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This commit is contained in:
OBattler
2025-01-07 02:42:09 +01:00
parent e833e1da3f
commit c3faf20226
2 changed files with 44 additions and 11 deletions
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8
src/scsi/scsi_aha154x.c
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@@ -678,6 +678,7 @@ aha_pnp_config_changed(uint8_t ld, isapnp_device_config_t *config, void *priv)
aha_eeprom_save(dev);
dev->rom_addr = config->mem[0].base;
aha_log("Base = %08X, Size = %08X\n", config->mem[0].base, config->mem[0].size);
if (dev->rom_addr) {
mem_mapping_enable(&dev->bios.mapping);
aha_log("SCSI BIOS set to: %08X-%08X\n", dev->rom_addr, dev->rom_addr + config->mem[0].size - 1);
@@ -869,13 +870,12 @@ aha_setmcode(x54x_t *dev)
}
aha1542cp_pnp_rom = (uint8_t *) malloc(dev->pnp_len + 7);
fseek(fp, dev->pnp_offset, SEEK_SET);
(void) !fread(aha1542cp_pnp_rom, dev->pnp_len, 1, fp);
(void) !fread(aha1542cp_pnp_rom, 4, 1, fp);
memset(&(aha1542cp_pnp_rom[4]), 0x00, 5);
fseek(fp, dev->pnp_offset + 4, SEEK_SET);
(void) !fread(&(aha1542cp_pnp_rom[9]), dev->pnp_len - 4, 1, fp);
/* Even the real AHA-1542CP microcode seem to be flipping bit
4 to not erroneously indicate there is a range length. */
aha1542cp_pnp_rom[0x87] |= 0x04;
/* Patch determined from Dizzy's AHA-1542CP PNP ROM dump. */
aha1542cp_pnp_rom[0x26] = 0x03;
/* Insert the terminator and the checksum byte that will later
be filled in by the isapnp code. */
aha1542cp_pnp_rom[dev->pnp_len + 5] = 0x79;