Pin-outs for the Tandy TRS80 Model I, III, and IV

After a frusterating day of trying to locate the Expansion Interface connector pinouts, I dug out the manual and looked them up the old fashioned way. The following information is from that sorce:

Line Printer Edge Card:
1	Data strobe
2	Gnd
3	D1
4	Gnd
5	D2
6	Gnd
7	D3
8	Gnd
9	D4
10	Gnd
11	D5
12	Gnd
13	D6
14	Gnd
15	D7
16	Gnd
17	D8
18	Gnd
19	N/C
20	Gnd
21	Busy
22	Gnd
23	Out of Paper
24	Gnd
25	Unit Select SLCT
26	Prime*
27	Gnd
28	Fault*
29	N/C
30	N/C
31	Gnd
32	N/C
33	Gnd
34	Gnd


Bus Card-Edge Signals:

1	Ras*		Row Addr Strobe for DRAM
2	Sysres*		System Reset, low durring power up Init or Reset
3	N/C
4	A10	
5	A12
6	A13
7	A15
8	Gnd
9	A11
10	A14
11	A8
12	Out*		Peripheral Write Strobe Output
13	WR*		Memory Write Strobe Output
14	Intak*		Interrupt Acknowledge Output
15	RD*		Memory Read Strobe Output
16	N/C
17	A9
18	D4
19	In*		Peripheral Read Strobe Output
20	D7
21	Int		Interrupt Input (Maskable)
22	D1
23	Test*		Low on Test input tri-states Address and Data
24	D6
25	A0
26	D3
27	A1
28	D5
29	Gnd
30	D0
31	A4
32	D2
33	Wait*		Processor Wait Input
34	A3
35	A5
36	A7
37	Gnd
38	A6
39	+5V		5 volts output (limited current)
40	A2