What's the actual memory map configuration and interrupt status at boot time (phase 2, after RET NC)? Can I assume it's the same on all MSX models and configurations or it depends on the firmware (either internal ROMs or from extra hardware)? Just to save a couple of instructions! 8;) Btw, what are the contents of DE, HL and A passed to the boot code? Kiss you lot. MARK 2 **** MSX Mailinglist. To unsubscribe, send an email to [EMAIL PROTECTED] and put in the body (not subject) "unsubscribe msx [EMAIL PROTECTED]" (without the quotes :-) Problems? contact [EMAIL PROTECTED] (www.stack.nl/~wiebe/mailinglist/) ****