darrell.grainger@canremote.uucp (DARRELL GRAINGER) (02/13/90)
First, the 1 meg chip RAM Agnus is part number 8372. 8371 is 512K PAL only; 8370 is 512K NTSC only. My guess would be that the space in the computer is the address space between 1meg and 2meg (fast memory starts at the 2meg mark; second meg of address space is blank according to system memory maps). I think adding RAM in this space could cause compatibility problems. Darrell --- * Via ProDoor 3.1R
walrus@wam.umd.edu (Udo K Schuermann) (03/09/90)
In article <90030707485816@masnet.uucp> darrell.grainger@canremote.uucp (DARRELL GRAINGER) writes: >... > My guess would be that the space in the computer is the address space >between 1meg and 2meg (fast memory starts at the 2meg mark; second meg >of address space is blank according to system memory maps). I think >adding RAM in this space could cause compatibility problems. The system memory map reserves 2 megs for Chip RAM, though current hardware isn't up to the challenge yet. I suppose putting memory into that space could cause problems. Want to try it out and let us know? Udo Schuermann // "The power to destroy a thing is the walrus@cscwam.umd.edu \X/ absolute control over it." -- Frank Herbert
dksnsr@nmtsun.nmt.edu (Dr. Mosh) (03/10/90)
>The system memory map reserves 2 megs for Chip RAM, though current >hardware isn't up to the challenge yet. > >I suppose putting memory into that space could cause problems. >Want to try it out and let us know? > > >Udo Schuermann // "The power to destroy a thing is the >walrus@cscwam.umd.edu \X/ absolute control over it." -- Frank Herbert According to Amiga Resource, Commodore has been testing 2 meg chip ram machines... and in the magazine it discusses how to get 2 meg chip quite easily actually, by replacing the rams with a bigger ram or something like that and other "hacks"... Pick up the latest A-Resource if you want to read about it... -Dino Khoe -- ============================================================================= Dr. of Moshology | | | / \ /\ |/ Any system dksnsr@nmtsun.nmt.edu | |---||____|| |\ can be New Mexico Tech Computer Science | | || | \/ | \ cracked...
ifarqhar@mqccsunc.mqcc.mq.OZ (Ian Farquhar) (03/14/90)
In article <1990Mar8.194633.997@wam.umd.edu> walrus@wam.umd.edu (Udo K Schuermann) writes: >The system memory map reserves 2 megs for Chip RAM, though current >hardware isn't up to the challenge yet. What was meant to go in the other spaces? There is a total addressing range of 16M, 9.5M of which can be RAM. 512K is used by the ROMS (two maps of the same 256K of ROM), and 1M is used by I/O. This accounts for one extra meg, so can anyone tell the net what happenned to the other 4M? "... and if the answer is Liberal, the question was probably stupid!" Tim (The Big Gig) Ian Farquhar Phone : (612) 805-7420 Office of Computing Services Fax : (612) 805-7433 Macquarie University NSW 2109 Also : (612) 805-7205 Australia Telex : AA122377 ACSNet ifarqhar@macuni.mqcc.mq.oz.au ifarqhar@suna.mqcc.mq.oz.au D