osiweb.org

Sideburn wrote: ↑Sun Apr 07, 2024 9:53 pm Yeah everything looks ok. I even changed the clock. It’s all back in this thread earlier.

bxdanny wrote: ↑Sun Apr 07, 2024 11:26 pm Sideburn,

I thought you were getting a stable display on the new monitor. Was I wrong? Is it not as stable as you thought at first? Or are you simply referring to the problems you had with other monitors?

Sideburn wrote: ↑Sun Apr 07, 2024 10:56 pm Yeah, it's nice and bright a voltages and frequencies look good and within spec. Your board is a replica though right? with more modern components?

bxdanny wrote: ↑Fri Apr 05, 2024 6:16 pm
That does look good, the monitor seems to be the same width as the keyboard. But the last (48th) character seems to have its right edge cut off, and as there is more than one character width of blank margin on the left, you might want to decrease the value at $FFE0 by one [more].

When you mentioned wanting to add a speaker, I thought (I guess because I had just seen dave's comments to nama about sound from his keyboard) that perhaps you might also want to be able to play the "noise" output from J4. But since you don't have that section populated (it usually wasn't on the 600B), I guess there'd be no point, especially since it takes careful machine-language programming to make that sound like anything other than, well, noise.

bxdanny wrote: ↑Sun Apr 14, 2024 7:11 pm The 8D shown at location 992 (which is $3E0) would be the location in question. At least if you have pin 19 of the ROM pulled low. I'm not sure if you have it reattached to the A10 line, or still pulled high or low, so unless you have it pulled low, it would really be location 2016 ($7E0) that you want to change.