I was going through various miscellaney and found a box labeled "MISC PC BOARDS". On opening it up, I found a number of boards which may of interest to the list. With one possible exception, they are all up for grabs, on the same conditions as my last pile of stuff: cover shipping and it's yours (including free if you pick it up in Montreal). Except where noted, this is all "no obvious physical damage, but completely untested and has been sitting idle for some unknown number of years, probably at least ten". First, the board I suspect I want to keep - I have some questions about it, if anyone can answer them. It's apparently from an outfit called MICRO WORKS, and is a "2708 EPROM BURNER". It has onboard a 6821, two 7474s, a 7406, a 555, a 7805, a 7904, a 7812, a 3904 transistor, various two-terminal devices (caps, resistors, diodes, a LED), and a switch (apparently SPDT used as SPST) marked "HV OFF" and "HV ON". Oh, and a rather nice 24-pin ZIF DIP socket. It has a card-edge connector that makes it look as though it goes with the SwTPc stuff listed below - its only 30-pin, but has the same pin pitch and blocked pin. Basically, what I want to know is, how much hackery would it take to turn this into something I could attach to, say, a parallel port, and use to burn EPROMs? Next, the stuff that's definitely up for grabs. Of these, to start, four Wang boards: A board in the shape of a rectangle about 20"x13" with a rectangle of about 12"x5" cut out of one corner - or, equivalently, a rectangle of 20"x8" overlapped with a rectangle of 8"x13" (where in all four cases the dimensions are in the same order). On the 12" edge there is a connector that looks physically like a 3U VME connector to my (not very used to VME) eye. On the 8" edge there is a DB25F, what I might call (quite possibly improperly) a DIN-4, and a 36-pin Centronics. At the end of the 20" edge farthest from the 8" edge, there are two 34-pin (17x2) 0.1"-pitch connectors of the sort I learned to call Bergs. According to the solder side, this is an "8221-R2" and bears the Wang name; on the component side, I also see the Wang logo and the markings "8221- -R2M2", where the number 14, or perhaps the letter A, has been hand-written into the gap, and the last 2 is in a different font from the rest. Following that is a box into which has been handwritten J05796. Silkscreened - not part of the foil pattern - I see "CPU/SYSTEM BOARD" and "8221-R1 SILK SCREEN". There is one empty socket, a 40-pin DIP; the other seven sockets are filled. Based on the datecodes I see on the soldered-in chips, this dates from mid-'82. A board which I speculate is a backplane to go with the previous board. It bears no active components, only connectors and resistors. It has a connector physically compatible with the VME-like connector on the above board, five 86-conductor card-edge connectors (43 pins on each side, with approximately S-100 pin spacing), and three connectors that look like power connectors: one each of five, three, and two pins. In the foil patterns on the compoent side, this is marked COMP. SIDE 8241- -R?M and the Wang logo (where ? may actually be intended to be a 0). In the foil on the solder side I see the Wang logo and 8241-R? MADE IN USA CIRCUIT SIDE This baord is about 6"x7". Another Wang board. This one is about 8"x12" and has two card-edge connectors, one physically compatible with the 86-pin connectors on the previous board and one 20-pin one with much narrower spacing on the other edge. It has what appears to be a back-panel connector with a metal shield on the 8" edge (which is not included in the 12" dimension - it adds maybe 5/8") bearing a DA15F connector. This baord is marked "8223- -R?M" on the component side and "8223-R?" on the foil side, and has numerous patches applied in the form of etch run cuts and soldered-on wires. Almost everything is soldered in, but there is one socket, bearing a crystal oscillator marked "19.200 MHZ". Another board which looks very much like 8241 board above which I speculated was a backplane, except that instead of the VMEish connector it has a sixth 86-pin card-edge connector. It is marked as 8229 instead of 8241, but otherwise looks basically identical to the 8241 described above. Three boards which I expect are from an SwTPc. Each bears the SwTPc logo somewhere in the component-side etch. One I feel sure is a CPU board. It bears many DIPs, all socketed (and all sockets populated), a 7805 and four discrete transistors or similar devices soldered in, and miscellanous two-terminal devices (resistors, caps, a crystal, maybe some others I don't recognize). The "big chip" is an MC6800P; I also see an HM46810P, an MC14411P, and a chip labeled with the motorola logo and the text "SWTBUG 1.0" and a "7748" which I imagine is a datecode. Everything else is in the 8- to 20-pin range. On the card edge is a 50-pin single-row connector with slightly over 2.5 pins to the centimetre, with one pin space filled with plastic. A board with 39 empty DIP sockets (mostly 16-pin, at least one 14-pin), no filled sockets, and two 7805s apparently connected in parallel. Next to the SwTPc logo is the text "MP-M". I suspect the 7805s are intended to have heatsinks which the board has been robbed of, probably at the same time as the socketed chips were removed. This has a card-edge connector apparently identical to that on the CPU board (just above). A board which I feel sure is memory. It's marked "MP-8M2" and has a SPDT switch with the positions marked "WRT. PROTECT" and "NORMAL"; next to one row of 8 DIPs is "UPPER 4K" and next to another is "LOWER 4K". It also has two 7805s, each driving power to some of the chips - their outputs aren't wired together. There is also a DIP bank of four switches. Finally, two miscellaneous boards. One I suspect of being an S-100 prototyping board. It has a 7805 and numerous power decoupling caps, a lot of uncomitted solder pads, and a 100-pin card-edge connector that looks like S-100 to my inexperienced eye. It is silk-screen labeled "CROMEMCO WRAP BOARD" on the component side and "CROMEMCO WWB-2" on the solder side. The other is a mystery to me. It looks like a module from a very early modular computer of some sort. It dates from the very early IC days, I would say - the days when an IC package would contain maybe five to ten transistors and not much else. It bears a logo that consists of the letters A and M, stacked with the A over the M, inside an octagon whose vertices are at (cos(k*pi/4),sin(k*pi/4)) - ie, turned 22.5? relative to stop-sign orientation. It has been robbed of one component, a transistor to go by the labeling ("Q5" on the component side), but I think everything else is present. /~\ The ASCII der Mouse \ / Ribbon Campaign X Against HTML mouse(a)rodents.montreal.qc.ca / \ Email! 7D C8 61 52 5D E7 2D 39 4E F1 31 3E E8 B3 27 4B