Thanks guys, I am now giving some serious thought to a Retro Arcade Console with the QL at the core, but at switch-on I don't want the user to have to see or press the F1/F2 configuration choice, so the next thing is in the EPROM code (which I assume will run first) can I get it jump passed the F1/F2 choice and just to if F2 has been pressed so that it finishes off the sequence as in TV mode and looks for a boot file or will it just load in extensions from the memory locations in the EPROM? Lee Privett ¦--------------------------------------------------------¦ Sent from my Laptop running XP but emulating the QL using QPC2 ¦--------------------------------------------------------¦ ----- Original Message ----- From: Ralf Reköndt To: ql-us...@q-v-d.com Sent: Saturday, February 12, 2011 2:35 PM Subject: Re: [Ql-Users] Hardware question
Lee Privett wrote: > I was just wondering what would be involved in burning my own EPROM with > my own set of routines for plugging into the ROM port (like TK2), has > anyone done this? what sort of kit is involved and how much are we > talking about here. Also would I have to make my own pcb or can they be > bought/manufactured. This is all for the original QL of course. The Technical Manual states: 11.4 Add-on Card ROMs When the machine is booted, the operating system checks for plug-in ROM drivers by looking for the characteristic longword flag $4AFB0001 at the base of each location in which a ROM might be present. The beginning of a plug-in ROM should be in the following format: 00 $4AFB0001 (flag to indicate ROM is present) 04 pointer to list of BASIC procedures and functions 06 pointer to initialisation routine 08 string identifying the ROM The pointers are relative to the base of the ROM. If the list pointer is zero then there will be no attempt to link routines into SuperBASIC. There are also a few tools, which do that for you. There is one from Jochen Merz, very good and easy to use (Thing & EPROM-Manager) and one from Liberation Software (RPM-Manager, not do delightful, but working) Cheers...Ralf _______________________________________________ QL-Users Mailing List http://www.q-v-d.demon.co.uk/smsqe.htm _______________________________________________ QL-Users Mailing List http://www.q-v-d.demon.co.uk/smsqe.htm
