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Merge pull request #4497 from 86Box/tc1995

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NCR 53c400 timing fixes.
This commit is contained in:
Miran Grča
2024-05-30 00:45:51 +02:00
committed by GitHub
parent d00f7ebf98 0897eea7df
commit 82999d2a94
2 changed files with 10 additions and 7 deletions
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15
src/scsi/scsi_ncr53c400.c
View File

@@ -146,8 +146,8 @@ ncr53c400_write(uint32_t addr, uint8_t val, void *priv)
if (ncr400->buffer_host_pos == MIN(128, dev->buffer_length)) {
ncr400->status_ctrl |= STATUS_BUFFER_NOT_READY;
ncr400->busy = 1;
if (!(ncr->mode & MODE_MONITOR_BUSY))
timer_on_auto(&ncr400->timer, ncr->period / 280.0);
if (!(ncr->mode & MODE_MONITOR_BUSY) && ((scsi_device_get_callback(dev) > 0.0)))
timer_on_auto(&ncr400->timer, ncr->period / 250.0);
}
}
break;
@@ -182,9 +182,12 @@ ncr53c400_write(uint32_t addr, uint8_t val, void *priv)
memset(ncr400->buffer, 0, MIN(128, dev->buffer_length));
if (ncr->mode & MODE_MONITOR_BUSY)
timer_on_auto(&ncr400->timer, ncr->period);
else
else if (scsi_device_get_callback(dev) > 0.0)
timer_on_auto(&ncr400->timer, 40.0);
ncr53c400_log("DMA timer on, callback=%lf, scsi buflen=%d, waitdata=%d, waitcomplete=%d, clearreq=%d, datawait=%d, enabled=%d.\n", scsi_device_get_callback(dev), dev->buffer_length, ncr->wait_complete, ncr->wait_data, ncr->wait_complete, ncr->clear_req, ncr->data_wait, timer_is_enabled(&ncr400->timer));
else
timer_on_auto(&ncr400->timer, ncr->period);
ncr53c400_log("DMA timer on=%02x, callback=%lf, scsi buflen=%d, waitdata=%d, waitcomplete=%d, clearreq=%d, datawait=%d, enabled=%d.\n", ncr->mode & MODE_MONITOR_BUSY, scsi_device_get_callback(dev), dev->buffer_length, ncr->wait_complete, ncr->wait_data, ncr->wait_complete, ncr->clear_req, ncr->data_wait, timer_is_enabled(&ncr400->timer));
}
break;
@@ -239,8 +242,8 @@ ncr53c400_read(uint32_t addr, void *priv)
if (ncr400->buffer_host_pos == MIN(128, dev->buffer_length)) {
ncr400->status_ctrl |= STATUS_BUFFER_NOT_READY;
ncr53c400_log("Transfer busy read, status = %02x.\n", ncr400->status_ctrl);
if (!(ncr->mode & MODE_MONITOR_BUSY))
timer_on_auto(&ncr400->timer, ncr->period / 280.0);
if (!(ncr->mode & MODE_MONITOR_BUSY) && (scsi_device_get_callback(dev) > 0.0))
timer_on_auto(&ncr400->timer, ncr->period / 250.0);
}
}
break;

2
src/video/vid_s3_virge.c
View File

@@ -1072,7 +1072,7 @@ s3_virge_updatemapping(virge_t *virge)
virge->linear_base &= ~(virge->linear_size - 1);
s3_virge_log("Linear framebuffer at %08X size %08X, mask = %08x, CRTC58 sel = %02x\n", virge->linear_base, virge->linear_size, virge->vram_mask, svga->crtc[0x58] & 7);
if (virge->linear_base == 0xa0000) {
mem_mapping_set_addr(&svga->mapping, 0xa0000, 0x10000, 0);
mem_mapping_set_addr(&svga->mapping, 0xa0000, 0x10000);
mem_mapping_disable(&virge->linear_mapping);
} else {
if (virge->chip == S3_VIRGEVX || virge->chip == S3_TRIO3D2X)