6502 - v20070922


Click here to download:   6502_9900.zip

This is an experimental 6502 emulation core for the TMS9900. I got as far as stepping through the sample program included in 6502_9900.a99, and that was all the testing it got. It's slow, as might be expected.

It does not support decimal mode, but it does appear to run, at least for the embedded test program. I didn't take it any further than that and this is therefore presented mostly as a curiousity.

To run, load Editor/Assembler and use option #3 to load 6502_9900 (which is an uncompressed TI object file). Then run program START.

All it will display is a count of 6502 cycles per frame, in hex. Real time would be about >2080. This won't get even close, around >0120. ;)

Building it can be tricky - it builds into low RAM and so overwrites the Editor/Assembler #3 loader if you try to load it that way. I use my external tiobj2bin tool to convert it into a PROGRAM image first (and that image is what is provided.)

Click here to view repository on Github
Click here to view commit history on Github

Repo Created:2022-04-12
Last Update:2022-04-12

Back to Software Menu

Babble Software Text Dolphin Info Image Gallery Forums HOME

This page belongs to tursi#at#harmlesslion.com
Email addresses are provided for personal contact only. The operator of this website will not give, sell, or otherwise transfer email addresses maintained by or for this website to any other party for the purposes of initiating, or enabling others to initiate, unsolicited electronic mail messages. This site does not make use of targetted advertising nor does it store cookies on your device nor does it use unique identifiers to track you. It serves you data and walks away. Only the sole system administrator has access to that data, which consists of your IP address and the data you requested. These logs are automatically deleted whether they have been reviewed or not, and are not used for any further purpose.