Having fixed the PSU and the short on the output board, I was rather hoping to have a working EII. Unfortunately this was a somewhat optimistic assumption!
On power up, the LCD reads "**Emulator 2** Boot in progress", followed a few second later by "Insert Diskette". Inserting a disk gives "Software Rev 3.1", followed by "This will take a while". The disk drive clicks for about 30 seconds, but booting never finishes. It either freezes at "This will take a while" or seemingly reboots and reverts to "**Emulator 2** Boot in progress", repeating the whole process until I switch it off.
I have about 50 disks and have tried maybe 20. I have also tried both drives, with the same results. Suspecting it could be a RAM problem, I swapped the ICs from the memory upgrade board to the digital board, again with no change in the outcome. Any ideas?
Kevin
Message
Re: [emulatorII-list] Emulator II will not boot from disk
2012-12-11 by Nigel Cruickshank
The first row of 8 memory chips on the main board (at the right side closest to the keyboard) are the ones that load the boot sequence. Swap these 8 out for another row – the third or forth row – and see if this makes a difference.
My EII was hanging on boot and after swapping a row out I had a fully operational EII. After that I ran the memory test disk (from my HXC) and located the faulty chips and replaced them. It was a slow process but eventually I got them all and now the memory test passes without fault.
Let me know if this helps,
Nigel
On 12/12/2012, at 9:44 AM, kgslug2 wrote: