diff options
Diffstat (limited to 'README')
| -rw-r--r-- | README | 17 |
1 files changed, 14 insertions, 3 deletions
@@ -83,13 +83,24 @@ VGA kit arrived, some weird issues with payment (UPS, as usual) 17.11.2020: new RAM, same problems -VCC on counters stabilize the circuit on slow clock +resistors on VCC stabilize the circuit on slow clock. 18.11.2020: playing with some cli, sei, having a copy of the counter and optimizing display (refresh on change only) X and Y are not stored in the interrupt routine, why this is -extremely bad, is obious! :-) +extremely bad, is obvious! :-) + +19.11.2020: +distinguish IRQ from timer1 and CA1 source, button should stop +and restart the counter. + +20.11.2020: +fixed wrong IFR address in interrupt handler +some problems in IER and IFR mismatch (though I don't enable +certain interrupts, I get a match in the status register). +Button press trigers two events (on press and release) effectively +switching off/on the counter. commands -------- @@ -102,5 +113,5 @@ minipro -r x -p AT28C16@DIP24 cmp x rom.bin # -wdc02 for extensions -vasm6502_oldstyle -wdc02 -x -wfail -chklabels -dotdir -o rom.bin -Fbin rom.asm +vasm6502_oldstyle -x -wfail -chklabels -dotdir -o rom.bin -Fbin rom.asm |