Shop OBEX P1 Docs P2 Docs Learn Events
I thought it was a Propeller — Parallax Forums

I thought it was a Propeller

doggiedocdoggiedoc Posts: 2,246
edited 2012-11-10 00:49 in General Discussion
Found this in a box of surplus I purchased:

Intel_P80C31BH-1.jpg


At least the size was right. :tongue:

Comments

  • ercoerco Posts: 20,261
    edited 2012-11-09 17:10
    Fire that summagun up! http://datasheet.octopart.com/P80C31BH-1-Intel-datasheet-87349.pdf
  • doggiedocdoggiedoc Posts: 2,246
    edited 2012-11-09 17:36
    ... and I found these:

    z80_cpu.jpg

    z80_pio.jpg
  • ercoerco Posts: 20,261
    edited 2012-11-09 17:44
    Mmmm. My stomach is howlin' fo' sum Z80's!
  • xanaduxanadu Posts: 3,347
    edited 2012-11-09 18:32
    I just got the grab bag of grab bags! I was in a local computer store, sneaking a peek at their recycle pile and found this!

    It's full of fun stuff. I think I might make a video to see if anyone is interested in any of it. The unmarked drawers are full of DIP chips of all sorts there must be hundreds of them. Some of the original Radio Shack packaging looks really old. It will be an adventure.
    IMG_1305.jpg
    1024 x 768 - 105K
  • localrogerlocalroger Posts: 3,452
    edited 2012-11-09 18:39
    I used the 8049 in a few projects back in the day -- it's an 8031 with built-in UV erasable PROM. That series is actually very prop-like for its day, with a surprisingly powerful counter/timer system (using interrupts though), and the 804x series almost totally self-contained so you could tossin a crystal or RC resonator and have a working computer. Intel meant that series for industrial control systems and it was available in milspec and IIRC radiation hardened versions. Was used in a lot of early automotive computers. It had a built in UART but only one, and I once wrote an interrupt driven bit-banging second serial port interface very similar in principle to FullDuplexSerial for it. But they were very slow, requiring a lot of clock cycles (like 20+) per instruction and at 12 MHz ran code noticeably slower than a Z80 at 2 MHz. With the chip running at 12 MHz my bit-banging serial driver maxed at 1200 baud.
  • localrogerlocalroger Posts: 3,452
    edited 2012-11-09 18:43
    xanadu, I have two parts cabinets of that exact style. From the same era. Probably not as interesting though, as I had no money and mostly stuffed them with parts harvested from discarded TV sets and such.
  • frank freedmanfrank freedman Posts: 1,983
    edited 2012-11-09 22:09
    Hey Doc,
    Should I see if there is a Z80 SIO floating around here somewhere so you have a complete collection? Not seen in years, but ya never know.....
    doggiedoc wrote: »
    ... and I found these:

    z80_cpu.jpg

    z80_pio.jpg
  • doggiedocdoggiedoc Posts: 2,246
    edited 2012-11-10 00:49
    frank freedman wrote: »
    Hey Doc,
    Should I see if there is a Z80 SIO floating around here somewhere so you have a complete collection? Not seen in years, but ya never know.....
    I'm not sure if I'd know what to do with it all. :D:D:D
Sign In or Register to comment.