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Author SHA1 Message Date
Gyorgy Szombathelyi
9bd3a25fa9 The 6502 (and 2A03/7) decrement the stack pointer by 3 during reset (by greyrogue) 2020-07-21 18:06:53 +02:00
Gyorgy Szombathelyi
9af2bc952d Add README 2020-07-15 15:08:34 +02:00
Gyorgy Szombathelyi
5390ddbc2d Add a qip file 2020-07-15 15:06:18 +02:00
Gyorgy Szombathelyi
d8718fd4e4 Unify T65 versions 2020-05-18 22:58:58 +02:00
Gyorgy Szombathelyi
34c1abd33a C64: [T65] unstable undocumented opcode fixes 2020-04-29 01:43:02 +02:00
Gyorgy Szombathelyi
70bcb63551 C64: [T65] don't delay IRQ with branches when not RDY 
Fixes Trick & Treat demo glitches due to too big IRQ delays
TODO:
- check with Visual6502?
- do the same with NMI?
 2020-04-12 23:11:52 +02:00
Gyorgy Szombathelyi
70eef1d4e3 [C64] T65: detect IRQ even when not RDY 
Fixes Tsunami demo

Waiting for RDY while the interrupt already asserted causes too much
delay. The interrupt cycle will still start at the correct position,
as soon as the RDY line is de-asserted, and other conditions are satisfied.
 2020-03-23 16:17:21 +01:00
Gyorgy Szombathelyi
3b6e52341f [C64] T65: don't reset NMI_Entered outside of RDY 2019-02-05 13:25:56 +01:00
Gyorgy Szombathelyi
718dcc2e42 C64: use only the T65 CPU 2018-09-06 02:41:13 +02:00
Gyorgy Szombathelyi
bdf4dc23fd C64: update C1541 (with T65 CPU) 2018-09-06 00:44:35 +02:00