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Diffstat (limited to 'src/emu/bus/a2bus/a2scsi.c')
-rw-r--r--src/emu/bus/a2bus/a2scsi.c10
1 files changed, 5 insertions, 5 deletions
diff --git a/src/emu/bus/a2bus/a2scsi.c b/src/emu/bus/a2bus/a2scsi.c
index d27903464b4..81a88bf1fd4 100644
--- a/src/emu/bus/a2bus/a2scsi.c
+++ b/src/emu/bus/a2bus/a2scsi.c
@@ -15,18 +15,18 @@
C0na = RAM and ROM bank switching
C0nb = reset 5380
C0nc = set IIgs block mode
- C0nd = set pseudo-DMA
+ C0nd = set pseudo-DMA
C0ne = read DRQ status in bit 7
-
+
In IIgs block mode, any read from C800-CBFF window fetches
the next byte from the 5380's DMA port. This lets you use the
65816 MVN/MVP operations to burst-transfer up to 1K at a time.
(Requires a cycle-by-cycle haltable 65816 core; don't install the
- GS/OS driver right now to avoid this)
-
+ GS/OS driver right now to avoid this)
+
Pseudo-DMA works similarly to the Mac implementation; use C0n8
to read/write "DMA" bytes in that mode.
-
+
*********************************************************************/
#include "a2scsi.h"