8086 Probe for HP1650B

The probe for the 8086 processor is built by connecting the cables from tw0 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.

8086 Probe for HP1650B Picture

The two Pods are wired as shown below:

8086 Probe Diagram

Pod		   8086			Pod
	   +----------------+
P1-Gnd	 1 | Gnd        Vcc | 40	NC
P1-14	 2 | AD14      AD15 | 39	P1-15
P1-13	 3 | AD13    A16/S3 | 38	P2-0
P1-12	 4 | AD12    A17/S4 | 37	P2-1
P1-11	 5 | AD11    A18/S5 | 36	P2-2
P1-10	 6 | AD10    A19/S6 | 35	P2-3
P1-9	 7 | AD9    *BHE/S7 | 34	P2-11
P1-8	 8 | AD8     MN/*MX | 33	NC
P1-7	 9 | AD7        *RD | 32	P2-10
P1-6	10 | AD6   *RQ/*GT0 | 31	P2-9
P1-5	11 | AD5   *RQ/*GT1 | 30	P2-8
P1-4	12 | AD4  *LOCK/*WR | 29	P2-7
P1-3	13 | AD3        *S2 | 28	P2-6
P1-2	14 | AD2        *S1 | 27	P2-5
P1-1	15 | AD1        *S0 | 26	P1-4
P1-0	16 | AD0        ALE | 25	P2-12
NC	17 | NMI      *INTA | 24	P2-13
NC	18 | INTR     *TEST | 23	NC
P1-CLK	19 | CLK        RDY | 22	P2-14
P2-GND	20 | GND        RST | 21	P2-15
	   +----------------+

Bill

1144 MST 13 February 2012