3 Dec
2007
3 Dec
'07
4:52 p.m.
Glen Slick wrote:
On Nov 30, 2007 8:49 AM, Paul Williams <paul at
frixxon.co.uk> wrote:
I tried to dump the ROM over the weekend and had no luck whatsoever,
regardless of what I tried to read it as. I suppose it wouldn't be out
of the question to recreate the contents manually based on the patterns
Josh Dersch wrote:
If you still want to read that ROM instead of capturing the patterns
from pictures in a doc, it appears that ROM has the same pinout as a
2716. If that ROM was in a socket instead of being soldered in place
I would pull it out of my VT100 and try reading it as a 2716 myself.
What sort of hardware are you planning on building for an emulator?
-Glen
Anyone out there have a dump of the VT100
character ROM? (This is the
ROM located at E4 on the VT100 PCB, labeled as 23-018E2-00)
The patterns are shown on pages 4-78 and 4-79 of EK-VT100-TM-003,
"VT100
Series Video Terminal Technical Manual". It also explains why the
characters you see on screen don't look exactly like the ROM pattern,
due to dot stretching.
from the tech manual; there's not a ton of data in
there, it's just
tedious :).
I'm doing a software emulation of the VT100 hardware, so that at last a
"100%" compatible VT100 emulator will be available for the PC :). I
have the 8080 emulation done, and once I get some time it's a matter of
getting the video and I/O emulation working... I plan on making the I/O
"pluggable" so you can use the emulator to talk to a serial port,
telnet, ssh, standard IO, etc...
Josh