mirrorbird(00:00:37)
like mosquitoes over the lake. scots and finns will know.
mirrorbird(00:00:14)
interesting, that snow effect, it only happens around 'set' bits in the bitmap, so it's like tiny flies hovering around the actual pixels on the screen. empty parts are clear.
Agemixer(23:59:25)
c64 6510 (6502) does 6 cycles on JSR (jump subroutine) and 6cy on RTS (Return from subr.)
mirrorbird(23:58:48)
knowing Uncle Sir Clive Sinclair -- probably done to cut the price to consumers
mirrorbird(23:58:25)
dynamic RAM refresh interferes with the address bus (for some addresses)
Agemixer(23:57:15)
or why it makes snow? i don't get it...
Agemixer(23:56:07)
huh! that's a big caveat so that's why such workarounds are needed... not very good graphic chips design?
mirrorbird(23:54:36)
ah yes. the spectrum also has the happy joy of 'contended memory' which will make Christmas snow on the screen
mirrorbird(23:54:01)
he has writ: "CALL is 17T. RET is 10T." (T-states) "so 27T for call/ret combo. I can't CALL or RET since the stack pointer is pointing at the screen, which would introduce graphics fuckups"