18 Dec
2000
18 Dec
'00
5:06 p.m.
From: Claude <claudew(a)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 @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
19 Dec
19 Dec
6:45 a.m.
From: Claude <claudew(a)sprint.ca>
>The owner told me the Robin board was modified to use 1M drives (?).
On Mon, 18 Dec 2000, ajp166 wrote:
1m???? maybe two sided 8". the best you can do
with it is 800k using
80tr/2sided DD.
IF somebody were to refer to "unformatted capacity", then 80 track 2 head
DD (300 RPM recorded at 250K bps) could be called "1 M".
The same way that Next calls their 2.8M "4 M"
(and 1.4M is 2M unformatted)
It used to be quite common for diskettes to be labelled with "unformatted
capacity".
--
Grumpy Ol' Fred cisin(a)xenosoft.com
11:04 a.m.
XenoSoft skrev:
It used to be quite common for diskettes to be labelled
with "unformatted
capacity".
And it's the only correct way to do it. I would feel cheated if I bought HD
diskettes which could only be formatted to 1,44 MB.
--
En ligne avec Thor 2.6.
Alle meine Noten bringen mich nicht aus den N?ten, und ich schreibe noten
?berhaupt nur aus N?ten.
--- Ludwig van Beethoven
8611
days inactive
8612
days old
2 comments
3 participants
participants (3)
-
ajp166＠bellatlantic.net -
cisin＠xenosoft.com -
optimus＠canit.se