System 80 X-4010 Expansion System

[RedskullDC]

.... I don't see any ROMs to enable any sort of booting. Am I missing something?

I mean, it may do something "clever" and not need a ROM...

Hi John,

Code to boot the floppy drive is already in the Level 2 BASIC roms in the main unit.

Looks for a disk controller at $37EC, if found it loads Track 0, Sector 0 to $4200 and jumps there.
(Don't have tech docs with me, but I'm reasonably sure that those are the correct addresses).

If no controller found, just jumps to the LV2 BASIC "READY>" prompt.

Cheers,
Leslie