68kMLA Classic Interface

Hello again,

So I decided to send one of the boards off to CayMac for transfer to a Reloaded build.

I pulled out an old SE/30 that had persistent Bus Errors on Boot and figured I might as well give it a shot

I found 8 Megs of ram per my original quest. And got it to Boot! Kinda.

Part One, The Daystar040:

I got it to boot and see the Turbo040 Happy Mac and actually load into 6.0.7 from a Startup Floppy disk.
In order for it to boot, I did have to flash the original 2434 market firmware to the v4.11. Also noted, I tried to use SST-39SF010A's to replace the original rom and it did NOT work. I was frustrated running through multiple versions of the rom but had purchased some AT27C010 that actually worked when flashed. I will make a forum post about my experience at some point mentioning this. I also had to replace the Aztec Powers Supply that was only providing 4.76v on boot. I swapped an Apple-branded for now (have ordered a BabyFace build) and it was reading at 4.96v upon boot allowing me to make it past "Welcome to Macintosh" once the 040 kicked in. Upon getting into system I noticed weird issues so decided to remove the 040 and make sure the system was stable to begin with.

First weird issue is the random appearance of "Disk initialization failed because the disk was locked"

I read somewhere online about a Color Classic Floppy issue and bridging a 4.7k ohm resistor. This worked initially when I was booting from floppy, but once I tried booting from BlueScsi it seems to appear randomly, with or without an internalfloppy cable with the Read/resistor mod.

I also have to boot off bluescsi into system 7 with Extensions off or it wont boot into desktop.

Sometimes when booting I also get a random bomb with error Type 41.

I have also been able to boot up into Snooper and run tests. Surprisingly nothing seems off. This is also odd, because when interacting with finder, If I try to copy files between "BlueScsi" drives it has a file operation error which led me to initially think to look at the SCSI write-enable lines (which I will probably do). Snooper, however, reported no issues when running Disk Tests on my BlueScsi volume. I will say that once I did start the snooper disk test, after running for 15 minutes no errors, the Disk Initialization error loop immediately began.

Just wondering if u knew of a good place to start looking. I saw a post u commented in about the RTC being the issue. Wondering if there is anyway to know if that is causing these very random issues I am having.

It is frustrating because at one point, I can be fully booted and fine. The next moment I am dealing with errors that wont even make it past boot. The randomness of the failures in what is hard to track down.

Also attached, is my 2434 binary for that version 2.0 I have for the Daystar040? Not sure if it is "production 2.0" but it is different from anything else I saw available on the forums.

Further update, since there are so many places to start.

Was able to use Reconnaissance on the SE/30 via the modem port. Passed all tests.

Took off BlueScsi for now and attached internal Superdrive and External Superdrive.

Boots using my Stock Apple 6.0.7 System Startup disk no problem whatsoever. When I put a system 7 boot floppy in I see a happy mac then it goes back to gray screen like at initial startup.

I put a System 7.0.1 Disk Tools floppy into the second drive and try to copy a file and get a disk operation error, when I press continue I get a Bomb and a Bus error. I am thinking the RW signal tracing should be my first place to check?

Seems the ASC is working if Serial works fine, ADB seems to work fine.

SCSI will boot but only 6.0.7 or lower images.
Floppies seem to read just fine, no writing.
Similar writing issues when trying to transfer files between BlueScsi volumes.

I DID find a trace that is concerning, I will map it out when I am back from work.

I have attached my pictures from the board.