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FIFO status is max single byte in PIO mode.

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This commit is contained in:
Toni Wilen 2016-09-16 17:34:10 +03:00
parent 8e3c8fd251
commit 8d05996a48
1 changed files with 10 additions and 5 deletions
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15
qemuvga/esp.cpp
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@ -584,6 +584,7 @@ uint64_t esp_reg_read(void *opaque, uint32_t saddr)
scsiesp_req_continue(s->current_req);
// set ti_size back to 1, last byte is now in FIFO.
s->ti_size = 1;
s->fifo_on = 1;
} else {
esp_raise_irq(s);
}
@ -612,11 +613,15 @@ uint64_t esp_reg_read(void *opaque, uint32_t saddr)
return old_val;
case ESP_RFLAGS:
{
int v;
if (s->ti_size >= 16)
v = 16;
else
v = s->ti_size;
int v = 0;
if (s->fifo_on) {
if (s->ti_size >= 16)
v = 16;
else
v = s->ti_size;
}
if (!s->dma && v > 1)
v = 1;
return v | (s->rregs[ESP_RSEQ] << 5);
}
case ESP_RES4: