From: matt (galaga_at_paradise.net.nz)
Date: 2004-07-13 12:41:39
ok i'm go to try and convert the sx64 to 100% pal but i just need a little help. The crt schematics for this unit would be a big help. I have a pal to rgb pcb from a tv that just needs +12v and a sandcastle which i can do via a tda2595 hoz ic & some "one shot timers" etc... the schematics would speed up the conversion. if any one have these can they scan them??? please??? :)) and email them to me?? or post them on http://www.funet.fi/pub/cbm/schematics thanks all for your input i'll let you all know when have success! matt ----- Original Message ----- From: "MagerValp" <MagerValp@cling.gu.se> To: <firstname.lastname@example.org> Sent: Monday, July 12, 2004 10:00 PM Subject: Re: sx-64 pal ntsc?? > >>>>> "M" == matt <email@example.com> writes: > > M> can i mod the roms or replace them with c64 ones?? > > Yes, you can use standard C64 roms. The only differences in the SX-64 > roms are > > * lack of tape routines > * default to device 8 > * different startup colours > > Roms autodetect PAL and NTSC and adjusts the timing accordingly. > > M> to fix the 60hz in the 6526?? > > It's not an issue with the 6526. > > M> Or do i need to change the crystals ?? > > Yes, and the VIC chip, and you might have to do cut a jumper or two on > the CPU board. > > M> and what will that do to the CRT (5" TV NTSC) > > It'll show a rolling black and white picture, but you should be able > to adjust the vertical hold to get a stable image. To get colour you > will need to replace the video board with one from a PAL unit. > > Not that I have tried any of the above, but it should be fairly > straightforward. > > -- > ___ . . . . . + . . o > _|___|_ + . + . + . Per Olofsson, arkadspelare > o-o . . . o + MagerValp@cling.gu.se > - + + . http://www.cling.gu.se/~cl3polof/ > > Message was sent through the cbm-hackers mailing list > Message was sent through the cbm-hackers mailing list
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