[Coco] bootlink progress

[Gene Heskett]

On Saturday 20 October 2012 15:15:09 Lothan did opine:

[...]
 
> This is something I could have really used way back when I was using a
> real CoCo 3 with Bruce Isted's hard-disk system and boot ROM. Back in
> those days, if I screwed up OS9Boot on the hard disk, it was a pain in
> the backside to recover. After the first time, I got in the quick habit
> of renaming OS9Boot to OS9Back before generating a new OS9Boot,
> scribbling down DT.BT and DD.BTSiz, and having a boot floppy with dEd
> on it in a safe place. I can't remember if the boot ROM was in the
> hard-disk controller or the floppy controller, though. I do remember
> modifying the Multi-Pak Interface to logically OR all the interrupts
> together... pretty much a required mod for decent interrupt handling in
> OS-9. Seems I remember doing something to break out CART select from
> ROM select and using the switch on the front to select which ROM to
> boot from, although I don't remember if tying the interrupts together
> did that by itself or if it was a separate surgery.
> 
I've had my IRQ's all tied together for 20 some years.  Don't leave home 
without it folks.

Cheers, Gene
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