Ampro Corporation P5X manual Signal Pin Name Function In/Out

Little Board/P5x Technical Manual

Table 2– 51. PC/104 Expansion Bus Connector, P1 (B1-B32)

	Signal
Pin	Name	Function	In/Out
B1	GND	Ground	N/A
B2	RESETDRV	System reset signal	OUT
B3	+5V	+5 Volt power	N/A
B4	IRQ9	Interrupt request 9	IN
B5	-5V	To J16-3	N/A
B6	DRQ2	DMA request 2	IN
B7	-12V	To J16-1	N/A
B8	ZWS*	Zero wait state	IN
B9	+12V	To J10-1	N/A
B10	N/A	Keyed pin	N/A
B11	SMEMW*	Mem Write(lwr 1MB)	I/O
B12	SMEMR*	Mem Read(lwr 1MB)	I/O
B13	IOW	I/O Write	I/O
B14	IOR	I/O Read	I/O
B15	DACK3*	DMA Acknowledge 3	OUT
B16	DRQ3	DMA Request 3	IN
B17	DACK1*	DMA Acknowledge 1	OUT
B18	DRQ1	DMA Request 1	IN
B19	REFRESH*	Memory Refresh	I/O
B20	SYSCLK	Sys Clock	OUT
B21	IRQ7	Interrupt Request 7	IN
B22	IRQ6	Interrupt Request 6	IN
B23	IRQ5	Interrupt Request 5	IN
B24	IRQ4	Interrupt Request 4	IN
B25	IRQ3	Interrupt Request 3	IN
B26	DACK2*	DMA Acknowledge 2	OUT
B27	TC	DMA Terminal Count	OUT
B28	BALE	Address latch enable	OUT
B29	+5V	+5V power	N/A
B30	OSC	14.3 MHz clock	OUT
B31	GND	Ground	N/A
B32	GND	Ground	N/A

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