claunia/86Box
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Trantor SCSI changes of the day (April 2nd, 2025)

Browse Source 
1. The PAS SCSI controller driver mamv1.sys dislikes having bits 0-6 set when a transfer has completed, take account from this, fixes mamv1.sys incomplete CD transfers (bits 0-6 get re-enabled when the transfer is ongoing).
2. I now understand why the T128 doesn't have a block count register, it does the block count manually from the SCSI layer directly, this fixes Pseudo-DMA transfers when using, e.g.: CD transfers using a sector size of 2340 bytes.
This commit is contained in:
TC1995
2025-04-02 21:47:32 +02:00
parent 5158d6b59b
commit 9c8c1a6f40
4 changed files with 23 additions and 21 deletions
Download Patch File Download Diff File Expand all files Collapse all files

9
src/sound/snd_pas16.c
View File

@@ -792,7 +792,14 @@ pas16_in(uint16_t port, void *priv)
if ((scsi_bus->tx_mode == PIO_TX_BUS) && !(ret & 0x80))
ret |= 0x80;
pas16_log("5C01 read ret=%02x, status=%02x, txmode=%x.\n", ret, pas16->scsi->status & 0x06, scsi_bus->tx_mode);
if (ret & 0x80) {
if (scsi_bus->data_repeat < MIN(511, scsi_bus->total_len))
scsi_bus->data_repeat++;
} else {
if (scsi_bus->data_repeat == MIN(511, scsi_bus->total_len))
ret = 0x00;
}
pas16_log("%04X:%08X: Port %04x read ret=%02x, status=%02x, txmode=%x, repeat=%d.\n", CS, cpu_state.pc, port + pas16->base, ret, pas16->scsi->status & 0x06, scsi_bus->tx_mode, scsi_bus->data_repeat);
}
break;
case 0x5c03: