Name that Ware, February 2018

The Ware for February 2018 is shown below.

Ware courtesy of Hernandi Krammes!

Every board designer leaves a thumbprint on their ware — and this one is from a region I had never previously seen a ware from before. So while probably easy to guess the function, I still appreciated it for the small, unique details.

27 Responses to “Name that Ware, February 2018”

  1. 0x3d says:

    Function is easy indeed: some ISA BNC network card, probably doing 10 Mbit/s. No clue about either brand or model or where to look for that special thumbprint.

  2. carl says:

    Other possibility is an Irma 3270 terminal emulator. I see ? three ? z80 processors, a bit much for an ethernet. 8900 ethernets were about 30 ttl ssi gates.

  3. Wam says:

    Looks like a Brazilian card to me. You can tell from the various SD.. cards, some of them only returning Brazilian hits on Google, from Brazil printed on many chips, and the use of Brascoil components.

    The use of BNC makes me think of a video output, the maquest on the bottom left firmware label could be a short for maquina de escritorios.

    Let’s add the z80 controller, the serial driver for communication with the host pc, and I’d say it’s a video compositing card to output text in a video for consumption in a TV/video studio ?

  4. Casey says:

    I have nothing to add, but I absolutely love those capacitors soldered to the IC U15. Look at how beautifully the leads are bent in to a rectangle!

  5. Paul de Groot says:

    Indeed it is an early graphics card for an isa slot. The z80 ctc chip is the give away.

  6. willmore says:

    Is it an I/O board for a Maquet Servo 300?

  7. Lucas says:

    If the card connector was ‘down’ and silkscreening read top to bottom left to right, then all the ICs are upside down from what I’d expect. Maybe it made layout easier.

  8. Martin says:

    It was made in the Free Economic Zone of Manaus — in the middle of the Amazonas!

  9. KeyJ says:

    Another hint that points towards Brasil is the “PROD.Z.F.M” marking near the analog section of the board, which could refer to the Manaus Free Trade Zone.
    As to the purpose of the board, I have no idea.

    It might be video, but only monochrome: The only crystal on the board is 16MHz, and it’s nearly impossible to derive the 3.58MHz color carrier from that. So it’s likely not a TV studio part.

    It might be networking, but then it’s likely not standard 10Base2 Ethernet, as that would require a 20MHz clock. (Sure, that could be synthesized from 16MHz, but why should they do that?)

    • Jonathan says:

      Token Ring’s timebase was 16MHz. Yet the connector on the back is more typical of ARCnet or 10base2, with no 2.5MHz or 10MHz timebase or multiple thereof in sight.

    • Wam says:

      Interestingly, Brazil is the only user of the PAL-M system, which mixes NTSC number of lines. Still apparently using 3.58MHz for its Color carrier.
      Still unsure how the 16Mhz could play with that. Maybe with the Z80 CTC ?

  10. Adam Robinson says:

    Just from a glance over it I’m going to guess a card for generating those big blocky text overlays on video that used to be used for stuff like sports timing in the late 80s.

  11. Some weird video card with PAL/NTSC output. Or maybe PAL/NTSC is an input, I don’t know, for pirating video. Just guessing :)

  12. Kristoffer says:

    This is most likely a Brasilian “clone” running CP/M. From what I’ve found several domestic companies were producing such systems based on Zilogs Z80. These CP/M machines often ran IBM mainframe emulators.

    Whats odd about thus ware is that it looks to be an ISA-card. Could be that they optet to reuse those connectors or it is a Z80 plugin for an IBM PC XT…

  13. Kristoffer Andersson says:

    This is most likely a Brasilian Z80 clone running CP/M. These were apparently popular in Brasil in the 80s and several domestic companies produced them. In the banking sector they often run some IBM mainframe terminal emulation software.

    What is odd about this ware is that it comes in the form of an ISA-card. Either they re-used that form-factor or it was used as a plugin in a IBM PC XT. My bet is that they re-used the ISA-spec.

  14. wrm says:

    I’ve just scrapped three very similar-looking boards (long, 8-bit ISA, Z-80 plus (dynamic in my case) RAM and support, BNC connector, no EPROM though) and they were early Novell G-Net 10Base2 boards.

    Similar but not the same.

  15. zebonaut says:

    Hmmm… What strikes me is the fairly long connection from the analog-looking part of the board to the BNC connector. If it was video or network, they would probably have used a shielded coaxial, or at least an impedance-controlled cable. Also, early network cards tended to have an AUI (attachment unit interface) on a 2-row, 15-pin SUB-D connector and left the work with the physical layer (i.e. the network medium which would be the coax cable) to the box you would attach. And: The fairly large analog-looking corner doesn’t look like a design for signals in the range above 1 MHz at all. These are the reasons why I tend to rule out anything “network” or “video”.

    The two DIP-8 ICs could be simple logic with transistor outputs (SN75454…), able to drive up to 400 mA.

    The large inductors are paired with a lot of capacitors and resistors, so these could be filters in the audio-frequency range (or maybe up to a few 100 kHz).

    The board is too complicated for something as simple as a trigger output or anything else that would just be something like switched DC or a slow PWM signal.

    Thinking about the whole combination of blocks – fairly complicated digital stuff, and a large analog part with a lot of filtering – and asking myself what type of system all this stuff would be needed in, my guess goes towards something like the output for the write head in a tape data storage device. You know… Cartridges or even the good ol’ stuff that used 1/2 inch tape on large 10.5″ reel-to-reel systems with linear tracks. If this is the case, it must be the board for the modulator to the write (record) head, because the read (playback) head would need shielding and a front-end for conditioning the weak signal from the tape. The processor and RAM might fit the purpose of taking some bits, adding error correction or a CRC and Manchester Code, and modulating the signal onto a few carriers suitable for tape storage, i.e. roughly within the audio frequency range that can be recorded onto tape.

    • zebonaut says:

      If it’s a tape system, I would love to see the pictures of the additional boards that would be needed for reading the data from the tape head and for the control of the machine’s motors and solenoids…

      After I had shown this ware-to-be-named to a friend, he agreed this could really be some sort of a circuit for generating a bitstream. He said this is backed up by the presence of the Z80 SIO chip – so there is a serial interface on a board with no connectors except the BNC. This chip generates the serial bitstream, and next to this chip, there is a 74LS123 with monoflops, and ‘174 flip flops. These can be used to get the coded data stream ready for something that fits onto a tape or into a wire… MFM, NRZI, …

      Well. If it’s not for a tape, maybe the “MOD” part of a MODEM using an audio channel? However, a MODEM would have a good synchronization between its transmitter and receiver, so it would probably be good to fit both onto one PCB, and this appears to be the transmitter only. On a tape storage device, this would probably work: You either write to the tape, or you read from it. Having the write and read circuits on two separate boards would probably work just as fine. Also, the parts, especially R28, R29 and some transistors like Q5, look “strong” enough to directly drive a tape head’s impedance.

  16. Mike Smith says:

    Could be some sort of satellite modem or satellite communications card, or its used to generate some kind of signal clock.

  17. Jean says:

    Some low speed (33k, 56k) modem ? The analog circuitry looks a bit like the one found in the Minitel.

    Or maybe an early DOCSIS modem, because of the BNC connector.

  18. GNUtoo says:

    A TV + Radio card with the antenna as BNC?

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