osiweb.org

Today I tried the following which I found on this old thread: http://osiweb.org/osiforum/viewtopic.php?f=5&t=66 - Used a hex editor to strip out the first 4k of the OS65D v3.3 disk image. - Via serial connection I loaded this 4k chunk at $2200 - tried the following three start location: $2240, $2245...

Not sure if the title to this thread is actually correct, but I have been talking to Steve and we were wondering if we, as a community, should start thinking about a standardized and hopefully simple way to archive real OSI disks, and the reverse, a way to create real disk from the archived images. ...

Some great insight into the early beginnings of the company...good find.

Keyboard fixed...The problem was a dead pull up resistor on the C0 line.

Phil

Yep, putting two thin washers under the transformer seems to have solved the noise issue.

My disk drive has been plagued by very loud noises, vibrating, and rattling...really awful. I've pulled it apart 3 times now. Each time I power it up while it's apart and I never get any noises. Very smooth. I know it's not the bearings anymore, because I fixed that horrid grating noise by replacing...

I'm very excited to see it.
Happy new year everyone.

I am very pleased to announce that the keyboard is fixed. First I replaced all the IC's in the keyboard section with new ones. however that did not solve anything, which left me thinking that it must now be one of the other components. I broke out the multimeter and tested all the diodes and they al...

Hi Dave, Thanks for the tip. Unfortunately I don't have Basic in ROM. If you recall from another thread I have been trying to get Basic to load from the Serial port, but I need to get the SYN600 ROM to load to C/W/M menu before I can do that, and I was going to attack that project after finishing th...

Hi Billdrom, Thanks for pointing me in the to that schematic. Sounds like a good idea to eliminate the parts that are not involved with the keyboard. One thing I notice straight off is that my keyboard doesn't have 74LS02's. The list of IC's are as follows: 74LS04 DM7417 74LS75 74LS193 74LS138 74LS3...