6 Jan
2005
6 Jan
'05
6:15 a.m.
On Thu, 6 Jan 2005, Bob Shannon wrote:
After some power supply work, and several weeks of
evenings of soldering
small caps to the boards
to tame the logic supplies the machine was able to run hand-toggled programs
on the main CPU.
Now that's debugging!
I discovered that the bootstrap
loader was having
problems with the 4K address boundry, and indirect address transfers were not
correctly setting
the high order memory address bit.
Indirect addressing -- when instruction sets were interesting!
Congratulations!