Somebody (Joe?) was asking for information on the various cables and jumper settings used with the HP98032, a 16 bit parallel interface for the HP9825 (etc) calculator. I've found the Option 085 cable, the one used to link it to an HP9885 8" floppy disk drive. I spent a little time noting down the wirelist, etc, and here it is. The wire colours are given using the standard numeric code used by HP and Tektronix -- the digits denote the colours (same code as the resistor colour code), the first digit is the base colour, then the wider (or only) stripe, then the narrow stripe. So '8' means a simple grey wire, '914' means a white wire (9) with a brown (1) and yellow (4) stripe. Actually, the colours in this cable are the same as the ones for the general purpose unterminated cable given in the 98032 manaul. The only difference is that this cable has a DD50 socket on the end of it. I've also noted down the jumpers that are installed on the option PCB. If I don't mention a jumper, it wasn't fitted. There is no extra timing capacitor on the option PCB either. If anyone has any of the other Options, I (and I guess Joe) would be interested in getting wirelists for those too. I have several 98032s, but only one disk drive, so the ability to use some of them for printers, paper tape punches, etc would be useful. Anyway, here's the wirelist for Option 085 DD50 Wire 98032 Signal 1 9 A25 Drain 2 905 A1 Gnd 3 906 B1 Gnd 4 927 A22 Ctl0 5 902 A21 PReset 6 928 A23 Ctl1 7 918 B21 EIR 8 9 A18 Gnd 9 9 B18 Drain 10 98 A19 Pctl 11 903 A24 Gnd 12 904 B24 Gnd 13 8 B19 Pflg 14 908 B20 Psts 15 901 A20 I/O 16 916 B22 Sti0 17 917 B23 Sti1 18 948 A2 DO15 19 947 A3 DO14 20 946 A4 DO13 21 945 A5 DO12 22 937 A6 DO11 23 936 A7 DO10 24 935 A8 DO9 25 934 A9 DO8 26 97 A10 DO7 27 96 A11 DO6 28 95 A12 D05 29 94 A13 DO4 30 93 A14 DO3 31 92 A15 DO2 32 91 A16 DO1 33 90 A17 DO0 34 N/C 35 926 B2 DI15 36 925 B3 DI14 37 924 B4 DI13 38 923 B5 DI12 39 915 B6 DI11 40 914 B7 DI10 41 913 B8 DI9 42 912 B9 DI8 43 7 B10 DI7 44 6 B11 DI6 45 5 B12 DI5 46 4 B13 DI4 47 3 B14 DI3 48 2 B15 DI2 49 1 B16 DI1 50 0 B17 DI0 Jumpers : 2 Output +ve true 7 DMA Enable 8 Clock high input byte on rdy B Word Input E Clock low input byte on rdy F Word Output -tony