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craig@sbc-85.com wrote:

I actually found a few of these v1.0 boards, there were two under a pile of stuff and one I was using as a coaster under my coffee cup.  

I also looked in the user manual to see what issues they had, all relatively minor but I do see some patches on my board.  I can send you photographs of the patches, one on the DC-DC you will want to do before mounting.   Do you just need one board or could you use them both if I sent two?  I do not have any extra carriers.

REVISIONS
v1.0 Internal Prototype with 7220-1 wk1420
changes subsequent to v1.0
1.01 Correct Q1 orientation and pinout
1.02 Correct U14 remote (disconnect signal).
1.03 Add bulk capacitance
1.04 Change bubble pattern to 7110A 20-pin version
1.05 Correct spacing of C5, C6 silver mica filter capacitors
v1.1 Produced board week 1820
changes subsequent to v1.1
1.1.0 Add normally open solder bridge on U5.13 for use with 7110AZ
v1.1b Produced wk2320

Hi Craig,

Photos of the patches would be welcome. Otherwise I have everything I should need to assemble the boards you sent. I also had time this past week to see if the original BPK board still works: it does, remarkably. There are fewer files there than I had thought there might be, but what's there is accessible. Here's how it looks:

EXPLORER-85 VER 1.4COPYRIGHT 1979NETRONICS R&DNEW MILFORD, CT..C1000 F3-F3 31-31 CC-CC 10-10 CD-CD 39-39 10-10 CD-CD 47-47 10-10 CD-CD 40-40 10-10 DA-DA 00-00 10-10 21-21 A7-A7 10-10 CD-CD 4A-4A 10-10 3E-3E 12-12 06-06 81-81 CD-CD 59-59 10-10 DA-DA 00-00 10-10 06-06 3C-3C 21-21 00-00 E0-E0 CD-CD 78-78 10-10 DA-DA 00-00 10-10 05-05 C2-C2 25-25 10-10 CD-CD 95-95 10-10 DA-DA 00-00 10-10 F3-F3 C3-C3 00-80 F0-F0 3E-3E 19-19 06-06 40-40 C3-C3 59-59 10-10 3E-3E 11-11 06-06 40-40 C3-C3 59-59 10-10 21-21 A2-A2 10-10 3E-3E 0B-0B D3-D3 05-05 0E-0E 05-05 7E-7E D3-D3 04-04 23-23 0D-0D C2-C2 50-50 10-10 C9-C9 11-11 FF-FF FF-FF D3-D3 05-05 DB-DB 05-05 07-07 DA-DA 6C-6C 10-10 1B-1B 7A-7A B3-B3 C2-C2 5E-5E 10-10 37-37 C9-C9 DB-DB 05-05 A8-A8 C8-C8 1B-1B 7A-7A B3-B3 C2-C2 6C-6C 10-10 37-37 C9-C9 0E-0E 44-44 11-11 FF-FF FF-FF DB-DB 05-05 0F-0F DA-DA 8B-8B 10-10 1B-1B 7A-7A B3-B3 C2-C2 7D-7D 10-10 37-37 C9-C9 DB-DB 04-04 77-77 23-23 0D-0D C2-C2 7D-7D 10-10 B7-B7 C9-C9 DB-DB 05-05 E6-E6 40-40 C0-C0 1B-1B 7A-7A B3-B3 C2-C2 95-95 10-10 37-37 C9-C9 01-01 10-10 08-08 00-00 00-00 3C-3C 10-10 08-08 00-00 00-00 0F-.*.G1000.GE000K2 FDOS VERSION 1.6DATE? 26-NOV-22-RUN PIP8080 PIP VERSION 1.6*DIRFILE NAME DATE LENGTHASM1 .SRC 09-MAR-85 60ASM2 .SRC 17-MAR-85 379ASM3 .SRC 17-MAR-85 31ASMLNK. 17-MAR-85 31FORMAT.OBJ 15-JUL-84 3LTTRS .TXT 11-NOV-84 46MTDIAG.SRC 22-MAR-85 8MTRELI.OBJ 31-MAR-85 7MTRELI.SRC 05-APR-85 56PIP . 21-JUL-84 16PIP .SRC 21-JUL-84 115SYSGEN.OBJ 06-AUG-84 2SYSGEN.SRC 06-AUG-84 16TEARDR. 06-AUG-84 49 106 FREE BLOCKS*
The stuff at the beginning is loading and running the bootstrap at 0x1000. I was hoping for the fdos source, but that's probably on a cassette that's long gone. So I spent some quality time with a disassembler and recreated the source - at least the assembled recreation has all the same label addresses as the binary from the MBM. In the process I discovered some oddities that rang some faint bells. For one thing, I think the reason there's so little there is because I did something back then that messed up some files, and this is all that's still visible. I have some vaguest of memories of thinking about how to recover from that mistake, whatever it was, but never did manage to undo the damage. I may just dump out all 2048 pages and see how that looks. At any rate, I think the next step is to build a board or two for the SBC-85, and keep this one in reserve.

Oh yes, the pip utility includes a trace function that looks like this:
*TRACE FORMAT.OBJFILE NAME REVERSE CURRENT FORWARD LINK BLOCK LINKFORMATOBJ 00 00 04 02 04 04FORMATOBJ 04 02 04 04 04 06FORMATOBJ 04 04 04 06 00 00*

Thanks,

Denver