IBM 560 - Manual (Page 32)

Figure 2-7 (Part 2 of 2). 100-Pin External Connector Pin Assignments
Pin Signal Type Pin Signal Type
23 GND G 73 GND G
24 NC – 74 SAFE5V W
25 Mouse Data K 75 Keyboard Data K
26 Mouse Clock K 76 Keyboard Clock K
27 GND G 77 GND G
28 NC – 78 NC –
29 NC – 79 NC –
30 GND G 80 GND G
31 Ring Indicator S 81 Data Terminal
Ready S
32 Clear to Send S 82 Transmit Data S
33 Request to Send S 83 Receive Data S
34 Data Set Ready S 84 Data Carrier
Detect S
35 GND G 85 GND G
36 GND G 86 − STROBE P
37 − AUTO FD XT P 87 Data Bit 0 P
38 − ERROR P 88 Data Bit 1 P
39 − INIT P 89 Data Bit 2 P
40 − SLCT IN P 90 Data Bit 3 P
41 Data Bit 4 P 91 Data Bit 5 P
42 Data Bit 6 P 92 Data Bit 7 P
43 − ACK P 93 BUSY P
44 PE P 94 SLCT P
45 GND G 95 GND G
46 RED V 96 − VIDEO_PDN V
47 BLUE V 97 GREEN V
48 HSYNC V 98 DDCDATA V
49 VSYNC V 99 DDCCLOCK V
50 GND G 100 GND G
Type Legend:
G: Ground W: Powerline
F: Diskette drive signal K: Keyboard/Mouse signal
S: Serial port signal P: Parallel port signal
V: Video signal
2-10 ThinkPad 560/560E System Board