Vista LM104-P50 User Manual
12
Appendix B
Bus Signal Assignments
PIN
Number
Number
J1/P1
Row A
Row A
J1/P1
Row B
Row B
J2/P2
Row C
Row C
J2/P2
Row D
Row D
0 --
--
0V
0V
1 -IOCHCHK
0V
-SBHE
-MEMCS16
2 SD7
RESET LA23
-IOCS16
3 SD6
+5V
LA22
IRQ10
4 SD5
IRQ9
LA21
IRQ11
5 SD4
-5V
LA20
IRQ12
6 SD3
DRQ2
LA19
IRQ15
7 SD2
-12V
LA18
IRQ14
8 SD1
-ENDXFR LA17
-DACK0
9 SD0
+12V
-MEMR DRQ0
10 IOCHRDY
KEY
-MEMW
-DACK5
11 AEN
-SMEMW SD8
DRQ5
12 SA19
-SMEMR SD9
-DACK6
13 SA18
-IOW
SD10
DRQ6
14 SA17
-IOR
SD11
-DACK7
15 SA16
-DACK3
SD12
DRQ7
16 SA15
DRQ3
SD13
+5V
17 SA14
-DACK1
SD14
-MASTER
18 SA13
DRQ1
SD15
0V
19 SA12
-REFRESH KEY
0V
20 SA11
CLK
21 SA10
IRQ7
22 SA9
IRQ6
23 SA8
IRQ5
24 SA7
IRQ4
25 SA6
IRQ3
26 SA5
-DACK2
27 SA4
TC
28 SA3
BALE
29 SA2
+5V
30 SA1
OSC
31 SA0
0V
32 0V
0V
Notes:
Rows C and D are used for 16 bit (AT) operation.