HP97 The journey begins

[teenix]

Hi all,

Progress almost came to a standstill. I was staying in a caravan to help my daughter out, but unfortunately, I was evicted because the owner wanted it back. The cheek of some people, it was only two years. ;-)) Mixed blessings though, it was really hot.

Anyway, finalizing the 19C came to a halt as I just don't have the space to keep it going at the moment. This should not be too long though. The good news, I am able to keep going on the Woodstock as it is only software. I have all the general software done for the processor and the PC, now I am just going to add a few goodies. The code so far has only used 45% of the ROM space so there is plenty available.

I added a clock with 5ppm accuracy and as there is limited space on the circuit board, it only has backup similar to the original Woodstock Continuous Memory. That is, if the battery needs changing or to do a hard reset on the processor, it can be removed for upto about 10 seconds and the clock data will stay active. The processor will fully shut down, but the actual continuous memory will hold up as long as it stays viable, which will probably outlast me.

cheers

Tony