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author angelosa <lordkale4@gmail.com>2025-11-23 19:09:20 +0100
committer angelosa <lordkale4@gmail.com>2025-11-23 22:03:01 +0100
commit007469659f313c71b7974590d658c77d2e117371 (patch)
treec1b056626895fd2ebe580a29cba5088e957e01a0
parent7485b60e39dfc784426202921c4a25541112005e (diff)
bus/nscsi/dtc510.cpp: speed up the data byte period a bit
-rw-r--r--src/devices/bus/nscsi/dtc510.cpp4
1 files changed, 3 insertions, 1 deletions
diff --git a/src/devices/bus/nscsi/dtc510.cpp b/src/devices/bus/nscsi/dtc510.cpp
index 3861e6f2201..203563bc4e2 100644
--- a/src/devices/bus/nscsi/dtc510.cpp
+++ b/src/devices/bus/nscsi/dtc510.cpp
@@ -248,7 +248,9 @@ void nscsi_dtc510_device::scsi_put_data(int id, int pos, uint8_t data)
// Byte transfer rate (5Mb/s)
attotime nscsi_dtc510_device::scsi_data_byte_period()
{
- return attotime::from_nsec(1600);
+ // Too slow, won't complete a DMA cycle when fetching IPL for pc9801
+ // return attotime::from_nsec(1600);
+ return attotime::from_nsec(1100);
}
// Command execution delay