Re: [IBM1130] A modern-day IBM1130?

[Walter T. Mosscrop]

And then there's my work in progress, an 1130 emulator based on a Parallax Propeller microcontroller...

 

http://forums.parallax.com/blog.php/58796-Retrocomputing...and-whatever-else-comes-to-mind

 

http://www.parallax.com/product/p8x32a-d40

 

The CPU emulation is about 3X faster than the original 1130. I use an SD card for the card deck (emulating a 2501) and for the printer (1403). The disk is emulated on a 2MB flash chip, and there are 8K words of core memory.

 

A modified electronic typewriter (via RS-232) acts as the console keyboard/printer. I apparently damaged one of the connectors a while back and have yet to figure out how to fix it. It's on my (ever growing) project list.

 

In the meantime, I wrote a quick-and-dirty console emulator program so that I can still play the games. 

 

Walter Mosscrop

----- Original Message -----

From: Bob Flanders

To: ibm...@googlegroups.com

Sent: Wednesday, August 28, 2013 5:18 PM

Subject: [IBM1130] A modern-day IBM1130?

In 2007, Richard Stofer demonstrated his IBM1130 emulator as seen in the links at http://ibm1130.org/party.

Today, I ran across this blog post detailing how Mr. Carl Claunch is recreating the 1130 with a mixture of modern and old hardware. 

Fascinating! Here's the link... http://ibm1130.blogspot.com/

Bob Flanders

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[Bob Flanders]

Was the game written in Fortran? EMU or 1130? Assembler?

Bob

[Walter T. Mosscrop]

It was written in Fortran with a smidgen of Assembler. The Assembler code was used to bypass the Fortran character set restrictions... you couldn't directly print "!", "?:, or ":", even though they were available on the element.

 

The routine simply set up an XIO instruction with the appropriate console printer (rotate/shift) code. The resulting "operation complete" interrupt from the printing was simply ignored by the interrupt handler.

 

Walter

 

----- Original Message -----

From: Bob Flanders

To: ibm...@googlegroups.com

Sent: Wednesday, August 28, 2013 8:55 PM

Subject: Re: [IBM1130] A modern-day IBM1130?

Was the game written in Fortran? EMU or 1130? Assembler?

Bob

On Wed, Aug 28, 2013 at 9:46 PM, Walter T. Mosscrop <wmos...@cox.net> wrote: