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Mask QBus addresses to 22 bits

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CRWolff 2024-08-17 07:20:54 -06:00 • committed by Paul Koning
parent 717410c8c1
commit ccdc5d0711
1 changed files with 4 additions and 0 deletions
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4
VAX/vax630_io.c
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@ -619,6 +619,7 @@ int32 Map_ReadB (uint32 ba, int32 bc, uint8 *buf)
int32 i;
uint32 ma, dat;
ba &= 0x003FFFFF;
if ((ba | bc) & 03) { /* check alignment */
for (i = ma = 0; i < bc; i++, buf++) { /* by bytes */
if ((ma & VA_M_OFF) == 0) { /* need map? */
@ -651,6 +652,7 @@ int32 Map_ReadW (uint32 ba, int32 bc, uint16 *buf)
int32 i;
uint32 ma,dat;
ba &= 0x003FFFFF;
ba = ba & ~01;
bc = bc & ~01;
if ((ba | bc) & 03) { /* check alignment */
@ -683,6 +685,7 @@ int32 Map_WriteB (uint32 ba, int32 bc, const uint8 *buf)
int32 i;
uint32 ma, dat;
ba &= 0x003FFFFF;
if ((ba | bc) & 03) { /* check alignment */
for (i = ma = 0; i < bc; i++, buf++) { /* by bytes */
if ((ma & VA_M_OFF) == 0) { /* need map? */
@ -715,6 +718,7 @@ int32 Map_WriteW (uint32 ba, int32 bc, const uint16 *buf)
int32 i;
uint32 ma, dat;
ba &= 0x003FFFFF;
ba = ba & ~01;
bc = bc & ~01;
if ((ba | bc) & 03) { /* check alignment */