8085 Probe for HP1650B

The probe for the 8085 processor is built by connecting the cables from two HP1650B Pods to a 40-pin Chip-Clip. I had to solder 0.025 inch SIP pins onto the clip, as its pins were a bit large.

The two Pods are wired as shown below:

8085 Probe Diagram

Pod		   8085			Pod
	   +----------------+
NC	 1 | X1         Vcc | 40	NC
NC	 2 | X2        HOLD | 39	P2-9
P2-15	 3 | RSTO      HLDA | 38	P2-8
NC	 4 | SOD        CLK | 37	P1-CLK
NC	 5 | SID      *RSTI | 36	NC
NC	 6 | TRAP       RDY | 35	P2-14	
NC	 7 | RST7.5   IO/*M | 34	P2-6
NC	 8 | RST6.5      S1 | 33	P2-5
NC	 9 | RST5.5     *RD | 32	P2-10
NC	10 | INTR       *WR | 31	P2-7
P2-13	11 | INTA       ALE | 30	P2-12
P1-0	12 | AD0         S0 | 29	P2-4
P1-1	13 | AD1        A15 | 28	P1-15
P1-2	14 | AD2        A14 | 27	P1-14
P1-3	15 | AD3        A13 | 26	P1-13
P1-4	16 | AD4        A12 | 25	P1-12
P1-5	17 | AD5        A11 | 24	P1-11
P1-6	18 | AD6        A10 | 23	P1-10
P1-7	19 | AD7         A9 | 22	P1-9
P1-GND	20 | VSS         A8 | 21	P1-8
	   +----------------+

Bill

1248 MST 13 February 2012