VT180/Robin system help needed

From: ajp166 <ajp166_at_bellatlantic.net>
Date: Mon Dec 18 22:06:21 2000

From: Claude <claudew_at_sprint.ca>
>The owner told me the Robin board was modified to use 1M drives (?).
>There are a couple ou wire jumpers on the Robin board. Also got some
>disks, Robin schematics, a few CP/M manuals...


1m???? maybe two sided 8". the best you can do with it is 800k using
80tr/2sided DD.

>2 BNC connectors on the Robin board. Whats coming outta there? video? on
>both? composite?


Those are on the VT100 board. Video in and video out, VT100 can sync to
external video. Makes a fair char gen.

>What drives should I be using to boot the Robin? The RX50-AAs or the
>Shugarts 400L?


SA400s but if he modded the boot roms then anything goes.

>I see 2 DB25 ports on the Robin board and a larger (DBxx) on the VT100
>board, anything special?


larger DB (37 pins) is on the VT180 card and is the FDC connector.
The VT180 is the 54-15152 board { z80, 64k dram, 4 8251s, 1793}.

>DIP switches on VT100...whats the deal there?


config for AVO, serial port (DTR/DTC if memory serves).

>Anything else I should look out for?
>
>Anybody know where VT180 info is available...I would like to see the
>guts of one...


the Vt180 design is near textbook z80 without zilog peripherals.

I have a fair amount but,not scanned. I've hacked the board hard. I
bought
a box of Vt180 cards (about 20 of them) and mods I've worked include:

    Standalone (no VT100 required)
    2 sided
    Z80 _at_6mhz
    Modded bios for 782k on 3.5" floppy
    IDE interface hacks
    CP/M in ROM
    Extended ROMs and paged ram

   I've used it as a stand alone printerbuffer.

Allison
Received on Mon Dec 18 2000 - 22:06:21 GMT