CONNECTOR J1 PIN OUT
FOR SBC-200

PIN #	SIGNAL NAME	DIRECTION	DESCRIPTION
1	+8V to 10V	Input	Power
2	+14V to 20V	Input	Power
4	NMI*	Input	Nonmaskable Interrupt (VI0*)
5	VI1*	Input
6	VI2*	Input
7	VI3*	Input
8	VI4*	Input
11	VI7*	Input
14	IE1	Input	CTC pin 13 (DMA3*)
15	?	Input	CTC pin 7 (A18)
16	?	Input	CTC pin 9 (A16)
17	?	Input	CTC pin 8 (A17)
19	CDSB*	Input
24	PHI 2	Output	Phase 2 clock
25	PHI 1	Output	Phase 1 clock
26	pHLDA	Output
27	pWAIT	Output	Wait (Inverted pRDY)
79,80,81,31,30,29,82,83	A0-A7	Output	Address bus bits 0-7
84,34,37,87,33,85,86,32	A8-A15	Output	Address bus bits 8-15
36,35,88,89,38,39,40,90	DO-0 to DO-7	Output	Data bus in
95,94,41,42,91,92,93,43	DI-0 to DI-7	Input	Data bus out
44	sM1	Output	Machine cycle one
45	sOUT	Output	
46	sINP	Output	
47	sMEMR	Output	Memory read
48	sHLTA	Output
49	CLOCK	Output	2MHz clock
50	GROUND	Input	Ground
51	+8V to 10V	Input	Power
52	-14V to -20V Input	Power
64	IE0	Output	CTC pin 11 (A23)
66	RFSH*	Output	Refresh (Z80 CPU card) (NDEF)
67	PHANTOM*	Output	Phantom Disable
68	MEMW	Output	Memory write
72	pRDY	Input	Ready
73	INT*	Input	Interrupt
74	pHOLD*	Input	
75	RESET*	Input	Reset
76	pSYNC	Output	
77	pWR*	Output
78	pDBIN	Output	Data bus in
96	sINTA	Output	
99	POC*	Output	Power on Clear
100	GROUND	Input	Ground

IO Port 78	Input	CTC 0
IO Port 79	Input	CTC 1
IO Port 7A	Input	CTC 2
IO Port 7B	Input	CTC 3
IO Port 7C	Input	Serial Port Data
IO Port 7D	Input	Serial Port Ststus
IO Port 7E	Input	Parallel Port Data
IO Port 7F	Input	Parallel Port Handshake/Memory Control/Jumpstart reset