68kMLA Classic Interface

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Color Classic Mystic Mods
Posted by: jefframsey on 2018-12-06 12:40:28 I finished my Mystic mod last night and installed my LC575 board into my CC. Went really well. I used a hobby knife to cut the traces, first scoring them with the blade and then turning it over to the dull side and scraping the copper trace away through the score marks. So far it is very stable. It only has 32 MB RAM so I am going to want to max that out, but quite a fun machine with 040 CPU and VGA graphics! I cannot load 8.1 yet, as I have no bootable CDROM drive. I have an NEC SCSI CDROM, but it will not boot from this. I am going to try to copy the 8.1 CD contents to the HD and install from there.
Posted by: Byrd on 2018-12-06 18:42:51 Nice one Jeff, it really makes the CC a much more versatile machine. I've had a CC modded like this for 10+ years and it hasn't missed a beat.
Posted by: jefframsey on 2019-01-04 11:00:45 Update on the Mystic mod. I printed the Mystic backplate that I found on this forum post: It fits perfect and looks pretty great! Thanks 360alaska!
Posted by: PB145B on 2019-01-04 11:27:12 That screen looks incredible in 640 x 480! Nice work! That mod actually looks pretty easy too.
Posted by: rickrob on 2019-01-04 19:15:56 Looks great-- I've been thinking about doing this mod to my Mystic. I'll probably recap the Analog Board while I'm at it. How readable is the screen at that resolution? Have you thought about overclocking the CPU? There's a mod for that as well-- Mine runs at 36 MHz.
Posted by: jefframsey on 2019-01-05 08:11:10 Looks great-- I've been thinking about doing this mod to my Mystic. I'll probably recap the Analog Board while I'm at it. How readable is the screen at that resolution? Have you thought about overclocking the CPU? There's a mod for that as well-- Mine runs at 36 MHz. Thanks. The screen is perfectly readable. A bit small, but nothing that I have to strain to see. I did not know about the overclocking mod? Any sources for that?
Posted by: rickrob on 2019-01-05 08:22:37 Thanks. The screen is perfectly readable. A bit small, but nothing that I have to strain to see. I did not know about the overclocking mod? Any sources for that? I used this one: https://web.archive.org/web/20030225181154/http://gabezing.sytes.net:80/lc575-40mhz-e.html
Posted by: Trash80toHP_Mini on 2019-01-05 08:42:21 Very nice work.
Posted by: Bolle on 2019-01-05 08:44:03 That’s what I did on my Mystic as well and it’s been running fine ever since. I used this one: https://web.archive.org/web/20030225181154/http://gabezing.sytes.net:80/lc575-40mhz-e.html
Posted by: rickrob on 2019-01-05 09:02:55 I settled on 36Mhz, as I started getting video artifacts at higher speeds. If you can find 70nS VRAM, you can go to higher speeds.
Posted by: PB145B on 2019-01-05 10:01:00 I used this one: https://web.archive.org/web/20030225181154/http://gabezing.sytes.net:80/lc575-40mhz-e.html Damn, that is just too cool! All this makes me want to get a CC even more!
Posted by: just.in.time on 2019-01-05 12:44:00 I cannot load 8.1 yet, as I have no bootable CDROM drive. I have an NEC SCSI CDROM, but it will not boot from this. I am going to try to copy the 8.1 CD contents to the HD and install from there. Not sure if you have tried yet, but you might be able to use a modified disk tools disk. Just ditch the Apple first aid and drive setup applications, toss in the extension for your CD drive, then boot from the disk tools disk and run the 8.1 install from the CD.
Posted by: jefframsey on 2019-01-13 10:01:07 Not sure if you have tried yet, but you might be able to use a modified disk tools disk. Just ditch the Apple first aid and drive setup applications, toss in the extension for your CD drive, then boot from the disk tools disk and run the 8.1 install from the CD. I was able to load 8.0 via floppy and then update to 8.1 via LocalTalk transfer of the image. It's a really fun, stable computer now!
Posted by: just.in.time on 2019-01-13 11:09:02 I was able to load 8.0 via floppy and then update to 8.1 via LocalTalk transfer of the image. It's a really fun, stable computer now! Very cool 🙂 Good work!
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