14 Feb
2013
14 Feb
'13
3:39 p.m.
On 02/13/2013 11:19 PM, Claunch,Carl wrote:
Currently I am adapting an IBM Electronic Typewriter
model 50 - a
late model of the Selectrics - to serve as the console printer since
the 1130 used a 1053 (Selectric based printer). The keyboard is being
adapted from a keypunch keyboard, since the 1130 used the keyboard
from an IBM 029 punch, and even where I am using more modern devices
(a streaming link over USB to a PC to present card images to the
peripheral adapter logic, I have made it timing and behavior
faithful. The processor itself is working quite well, which is why I
have moved the focus to peripherals. It is a very similar effort to
that of Lawrence Wilkinson who has built a 360 model 30 and is also
building peripherals at this time. You can read about the 360/30
project at http://www.ljw.me.uk/ibm360/vhdl/
Nice work!
I remember the 1130. What are you doing for a card reader? I recall
that the 1130 could only read column-binary--it was up to software to
interpret the data into character codes.
Has anyone done an FPGA emulation of the 1620? That one has a soft spot
in my heart to the extent that I can still remember the numeric opcodes
for many instructions. The 1401 occupies a similar place in my
memories. Little IBM boxes were really cute.
--Chuck