Fun with CBM arithmetics, Part II
Posted: Thu Dec 14, 2017 1:27 pm
So, after nearly 4 years I started this project I finally went to retire the original BASIC ROM of my VIC-20 (it's the chip with the Part Nr. 901486-01, together with some other removed parts - they still all work!):
Instead an EPROM with custom configuration (built by vintage-computers.it) took its place. Two collegues from the electronic workshop at my workplace were so kind to extract the ROM and place a socket instead.
... and in all its glory:
Now *my* VIC-20 doesn't anymore mess up multiplying numbers as can be seen in this video (basic-p.avi - warning: ~16 MB. But try it out on your own VIC-20 ... ).
Cheers,
Michael
Instead an EPROM with custom configuration (built by vintage-computers.it) took its place. Two collegues from the electronic workshop at my workplace were so kind to extract the ROM and place a socket instead.
... and in all its glory:
Now *my* VIC-20 doesn't anymore mess up multiplying numbers as can be seen in this video (basic-p.avi - warning: ~16 MB. But try it out on your own VIC-20 ... ).
Cheers,
Michael