• Hello MLAers! We've re-enabled auto-approval for accounts. If you are still waiting on account approval, please check this thread for more information.

Apple /// not booting

M

max1227

6502
Hello everyone,

I recently got hold of an Apple ///, however it doesn't want to boot any Apple /// software.  It will however boot nearly all my Apple ][ software using Apple ][ emulation. 

Basically it freezes on the Apple /// SOS welcome screen, see image below. The disk drive also stops at this point. Someone mentioned to me that it may be a RAM fault as the Apple /// doesn't have enough memory to completely load SOS. Is there a way of checking how much memory there is?

Thanks in advance

Max 

Unknown.png

 
Could be missing memory, maybe, look at the memory board and post a picture of it. 

I could also be bad CAPS that needs to be replaced on the mother board. The IIe board is a separate beast. Do you have two boards for the IIe emulation or only one?

 
This is a blast from the past... but since you brought it up, it's likely the OP had a disk with a driver configured that was looking/waiting for a card that wasn't actually there.

 
There's no separate board for Apple ][ emulation - it's all done in software.

Since the ][ emulation works OK, and you get this far in the boot of a SOS disk, I agree with david_schmidt that there is likely an issue with the SOS disk; driver is a likely culprit.

It _could_ be RAM or some other hardware issue. These can be tricky to troubleshoot. There are disk images for hardware tests out on the 'net.

I'm currently re-capping a /// power supply and hoping that helps with the errors I'm getting on one of my ///s now.

 
 
Apple II+ emulation is built into the Apple ///. The card you have expands it to support enhanced (with 65c02 swap) Apple //e software.

 
NJRoadfan said:
Apple II+ emulation is built into the Apple ///. The card you have expands it to support enhanced (with 65c02 swap) Apple //e software.
Click to expand...
ah, I'll test it eventually then. I have only one of the two board of the Titan Upgrade and a friend that investigated problem on my III thing it could cause some issues, we're not 100% sure yet. I will order a video ROM to place into the III motherboard and test it without the IIe card installed.

I always had the impression it was required to have the Titan expansion card to support Apple II (any model) emulation. It probably also mean that the IIe expansion board I was released late in the Apple III timeline to support the IIe when it was announced. 

Thank you for the information. I'll go to bed being a better Apple III person tonight, thanks to you. :)

 
Hi all,

I've only just looked at this post as when I posted it back in December nobody replied. 

Anyway since then I have repaired the Apple /// and it was faulty RAM as diagnostics showed that nearly all the RAM on the board was dead. I bought a new set from VintageMicros and now it runs perfectly.

All the disks were good to my amazement as they had been stored in a garage for many years. 

Thanks for all your replies.

Max 

 
You must log in or register to reply here.

Similar threads

Ajaxermd
Apple /// Working!
Replies
3
Views
655
Byrd
Byrd
D
What did I do to my Apple IIGS? Pink and green boxes on boot
Replies
11
Views
3K
derFunkenstein
D
D
Dual booting OS9 and OSX on eMac but I'm a Winbaby
2
Replies
31
Views
667
nathall
nathall
Retronaut
Help needed getting A2SCSI card visible on Apple IIgs
2 3
Replies
54
Views
8K
nglayton
nglayton
mst3k
Dove MacSnap video issue
Replies
6
Views
2K
mst3k
mst3k
Back
Top