I have an 1130 firmware from a group at Purdue which
is supposed to run 1130 code on an Microdata 1600.
the Microdata was developed by Alan Shapiro and Max
Malone, et.al., but had inputs from the Data machines
people who were bought by Varian. there are a lot of
similarities there.
I'd appreciate your listing and any guidance on what
I need to add to my emulator to run and support the
1130. Of course will have to analyze what the firmware
needs as well. I can do a card reader, punch, paper tape,
punch. Already have consoles emulated along with printer,
tape and disk.
I'd be glad to share with you, but plan to share my emulator
which will have the Microdata 1621 and this firmware
thanks
Jim
On 12/11/25 14:44, Van Snyder via cctalk wrote:
On Thu, 2025-12-11 at 13:15 -0500, Carl Claunch via
cctalk wrote:
I restore IBM 1130 systems and am archiving
software to be shared
with
enthusiasts and museums.
As my senior undergraduate project in 1974, I wrote
microcode to
convince a Varian V73 that it was really an IBM 1130. The university
had replaced an aging 1130 with the V73 and then discovered that Varian
didn't have a COBOL compiler. Back then, they still wanted to teach it.
I have the microcode, but I only got a listing, not the electrons, for
the I/O support running in 620f mode. The Computer History Museum has
the listing. If anyone is interested I can send the microcode and flow
diagrams for it.