User Manual
Page 19
X2 Signal Descriptions
Pin Signal Description Type PU/PD Comment
1 GND Ground PWR - -
2 GND Ground PWR - -
3 SD14 ISA Data Bus IO-5 PU 4k7 5V int. PU 100k 5V in
4 SD15 ISA Data Bus IO-5 PU 4k7 5V int. PU 100k 5V in
5 SD13 ISA Data Bus IO-5 PU 4k7 5V int. PU 100k 5V in
6 MASTER# ISA 16-Bit Master I-5 PU 8K2 5V -
7 SD12 ISA Data Bus IO-5 PU 4k7 5V int. PU 100k 5V in
8 DREQ7 ISA DMA Request 7 I-5 PD 4k7 to GND -
9 SD11 ISA Data Bus IO-5 PU 4k7 5V int. PU 100k 5V in
10 DACK7# ISA DMA Acknowledge 7 IO-5 no PU/PD int. PU 100k 5V in
11 SD10 ISA Data Bus IO-5 PU 4k7 5V int. PU 100k 5V in
12 DREQ6 ISA DMA Request 6 I-5 PD 4k7 to GND -
13 SD9 ISA Data Bus IO-5 PU 4k7 5V int. PU 100k 5V in
14 DACK6# ISA DMA Acknowledge 6 IO-5 no PU/PD int. PU 100k 5V in
15 SD8 ISA Data Bus IO-5 PU 4k7 5V int. PU 100k 5V in
16 DREQ5 ISA DMA Request 5 I-5 PD 4k7 to GND -
17 MEMW# ISA Memory Write IO-5 PU 8k2 5V int. PU 100k 5V in
18 DACK5# ISA DMA Acknowledge 5 IO-5 no PU/PD int. PU 100k 5V in
19 MEMR# ISA Memory Read IO-5 PU 8k2 5V int. PU 100k 5V in
20 DREQ0 ISA DMA Request 0 I-5 PD 4k7 to GND -
21 LA17 ISA Address Bus (SA17) O-5 PU 4k7 5V int. PU 100k 5V in
22 DACK0# ISA DMA Acknowledge 0 IO-5 no PU/PD -
23 LA18 ISA Address Bus (SA18) O-5 PU 4k7 5V int. PU 100k 5V in
24 IRQ14
ISA Interrupt Request 14 / ROMChip
Select
IO-5 PU 4k7 5V -
25 LA19 ISA Address Bus (SA19) O-5 PU 4k7 5V int. PU 100k 5V in
26 IRQ15 ISA Interrupt Request 15 IO-5 PU 4k7 5V -
27 LA20 ISA Address Bus (SA20) O-5 PU 4k7 5V int. PU 100k 5V in
28 IRQ12 ISA Interrupt Request 12 IO-5 PU 4k7 5V -
29 LA21 ISA Address Bus (SA21) O-5 PU 4k7 5V int. PU 100k 5V in
30 IRQ11 ISA Interrupt Request 11 IO-5 PU 4k7 5V -
31 LA22 ISA Address Bus (SA22) O-5 PU 4k7 5V int. PU 100k 5V in
32 IRQ10 ISA Interrupt Request 10 IO-5 PU 4k7 5V -
33 LA23 ISA Address Bus (SA23) O-5 PU 4k7 5V int. PU 100k 5V in
34 IO16# ISA 16-Bit I/O Access I-5 PU 1K 5V -
35 GND Ground PWR - -
36 GND Ground PWR - -
37 SBHE# ISA System Byte High Enable IO-5 PU 4k7 5V int. PU 100k 5V in
38 M16# ISA 16-Bit Memory Access IO-5 PU 1K 5V -
39 SA0 ISA Address Bus O-5 PU 4k7 5V int. PU 100k 5V in
40 OSC ISA Oscillator (CLK_ISA14#) O-3,3 - -
41 SA1 ISA Address Bus O-5 PU 4k7 5V int. PU 100k 5V in
42 BALE ISA Buffer Address Latch Enable IO-5 PD 4k7 int. PU 100k 5V in
43 SA2 ISA Address Bus O-5 PU 4k7 5V int. PU 100k 5V in
44 TC ISA Terminal Count IO-5 PD 4k7 -
45 SA3 ISA Address Bus O-5 PU 4k7 5V int. PU 100k 5V in
46 DACK2# ISA DMA Acknowledge 2 IO-5 no PU/PD -
47 SA4 ISA Address Bus O-5 PU 4k7 5V int. PU 100k 5V in
48 IRQ3 ISA Interrupt Request 3 IO-5 PU 4k7 5V -
49 SA5 ISA Address Bus O-5 PU 4k7 5V int. PU 100k 5V in
50 IRQ4 ISA Interrupt Request 4 IO-5 PU 4k7 5V -