Recent content by TheReducer

EGRET (Motorola 341S0851) controls reset, and I think also PRAM, RTC, ADB. https://wiki.preterhuman.net/Apple_Computer_Custom_IC_Definitions.

I do not get a bong through the headphones either. So, you do make a good point - it is not just the speaker. I've decided my first priority is to get the SCSI and floppy access working so I can boot the machine. Currently I do not get a sad Mac or a ? Mac - just a mouse cursor I can move...

Thanks for the reply, I'll consider the EGRET as a candidate for removal, cleaning and re-soldering as well. Note that the boot behavior on my Classic II is not intermittent, but is always the same now that both ROMs are correctly inserted.

I bought a Mac Classic II (rev b) locally for $30 - nonworking. It started up to black/white vertical bars. I found the ROMs were not positioned properly, and after positioning them correctly, the black/white bars went away. The system then started up to a blank gray screen with cursor that I...