80486DX2-66/86Box-fork
1
0
Fork 0
Code Issues Pull Requests Activity

Readded the previously incorrectly removed Load and Store SCRIPTS Instructions to the NCR 53C810.

Browse Source
This commit is contained in:
OBattler
2017-12-12 04:17:23 +01:00
parent d111aef475
commit 83f7d458db
1 changed files with 30 additions and 12 deletions
Download Patch File Download Diff File Expand all files Collapse all files

42
src/scsi/scsi_ncr53c810.c
View File

@@ -1340,23 +1340,41 @@ again:
case 3:
ncr53c810_log("00: Memory move\n");
if ((insn & 0x3E000000) == 0) {
if ((insn & (1 << 29)) == 0) {
/* Memory move. */
uint32_t dest;
/* ??? The docs imply the destination address is loaded into
the TEMP register. However the Linux drivers rely on
the value being presrved. */
dest = read_dword(s, s->dsp);
s->dsp += 4;
s->regop = 0;
if (dest)
lsi_memcpy(s, dest, addr, insn & 0xffffff);
}
else {
DPRINTF("Illegal memory move: %02X\n", insn >> 24);
lsi_script_dma_interrupt(s, LSI_DSTAT_IID);
break;
}
dest = read_dword(s, s->dsp);
s->dsp += 4;
lsi_memcpy(s, dest, addr, insn & 0xffffff);
} else {
uint8_t data[7];
int reg;
int n;
int i;
if (insn & (1 << 28)) {
addr = s->dsa + sextract32(addr, 0, 24);
}
n = (insn & 7);
reg = (insn >> 16) & 0xff;
if (insn & (1 << 24)) {
DMAPageRead(addr, (char *) data, n);
DPRINTF("Load reg 0x%x size %d addr 0x%08x = %08x\n", reg, n,
addr, *(int *)data);
for (i = 0; i < n; i++) {
lsi_reg_writeb(s, reg + i, data[i]);
}
} else {
DPRINTF("Store reg 0x%x size %d addr 0x%08x\n", reg, n, addr);
for (i = 0; i < n; i++) {
data[i] = lsi_reg_readb(s, reg + i);
}
DMAPageWrite(addr, (char *) data, n);
}
}
break;
default: