PIN-OUT OF THE 50-PENS CONNECTOR INSIDE DAIpc

Information is from DAInamic 5 May-June 1981 page 115

1	GROUND	SCREENING LINE
2	D0	DATA BIT 0
3	GROUND	SCREENING LINE
4	D1	DATA BIT 1
5	GROUND	SCREENING LINE
6	D2	DATA BIT 2
7	GROUND	SCREENING LINE
8	D3	OATA BIT 3
9	GROUND	SCREENING LINE
10	D4	DATA BIT 4
11	GROUND	SCREENING LINE
12	D5	DATA BIT 5
13	GROUND	SCREENING LINE
14	D6	DATA BIT 6
15	GROUND	SCREENING LINE
16	D7	DATA BIT 7
17	GROUND	SCREENING LINE
18	-	NO CONNECTION
19	GROUND	SCREENING LINE
20	MEMW	MEMORY WRITE STROBE
21	GROUND	SCREENING LINE
22	-	NO CONNECTION
23	A10	ADDRESS LINE 10
24	MEMR	MEMORY READ STROBE
25	A14	ADDRESS LINE 14
26	A11	ADDRESS LINE 11
27	A12	ADDRESS LINE 12
28	A13	ADDRESS LINE 13
29	A9	ADDRESS LINE 9
30	A15	ADDRESS LINE 15
31	A7	ADDRESS LINE 7
32	A8	ADDRESS LINE 8
33	A5	ADDRESS LINE 5
34	A6	ADDRESS LINE 6
35	A3	ADDRESS LINE 3
36	A4	ADDRESS LINE 4
37	A1	ADDRESS LINE 1
38	A2	ADDRESS LINE 2
39	A0	ADDRESS LINE 0
40	INTA	INTERRUPT ACKNOWLEDGE
41	CS LOW ROM	CHIP SELECT LOWER ROM
42	CS LB UPP ROM	CHIP SELECT LOWER BANK UPPER ROM
43	PSEUDO A12	A12 AFTER START-LOGIC
44	CS UB UPP ROM	CHIP SELECT UPPER BANK UPPER ROM
45	+5V	5 VOLT
46	+5V	5 VOLT
47	RAMOP	NOT RAM OPERATION
48	CK2	TTL LEVEL CLOCK (2MHz)
49	HOLD	HOLD REQUEST
50	SYNC	CPU SYNC SIGNAL