pawn@wpi.wpi.edu (Kevin Goroway) (03/22/89)
I was just told that Commodore displayed a 25 Mz version of the 68020 board at the Hanover Show in Germany? Is there any truth to this? Will there be an upgrade path for us 2500 owners? cost? Was it just a 25 Mz math chip? Second... I have SetCPU in startup sequence, no options...What are the options? Are there any reasons to use them? Dave? thanks! -- =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= | Pawn@wpi.wpi.edu Worcester Polytechnic Institute, Mass, U.S.A. | | Pawn@wpi.Bitnet main() { printf("Hello World!\n); } | =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
daveh@cbmvax.UUCP (Dave Haynie) (03/24/89)
in article <1455@wpi.wpi.edu>, pawn@wpi.wpi.edu (Kevin Goroway) says: > I was just told that Commodore displayed a 25 Mz version of the 68020 board > at the Hanover Show in Germany? Is there any truth to this? Not sure just what was shown in Germany, other than of course the stuff that everyone already knows about. > Second... > I have SetCPU in startup sequence, no options...What are the options? Are > there any reasons to use them? Dave? That depends on the version of SetCPU you're using -- the latest from the net, V1.4, does lots of interesting things if you're on a 68020 or 68030 system. Typing "SetCPU ?" will give you a list of options, something like this: SetCPU V1.4 by Dave Haynie Usage: SetCPU [INST|DATA] [[NO]CACHE|[NO]BURST] [[NO]FASTROM [TRAP]] [NOMMUTEST] [CHECK 680x0|68851|6888x|MMU|FPU] So if you've got a 68020, you can turn the instruction cache on and off. On an '030 system, you may be able to turn the data cache and cache line burst mode on and off (you will if the '030 card designer did The Right Thing). If you have an MMU in your system, FASTROM will build a 32 bit image of the system ROM and then use the MMU to translate that image back to $00FC0000, so you get full speed on ROM based things. Normally FASTROM sets up the MMU for 24 bit address wrapping, but with the TRAP option, addresses are a full 32 bits long, and any access beyond $00FFFFFF will result in a privilege violation exception (popularly known as GURU #2). The NOMMUTEST option turns off the MMU test, since some 68020 boards have design errors that prevent proper testing for MMUs (if yours does, NOW would be a good time to prod the manufacturer for a fix to this problem). The CHECK options let you check for a particular Motorola chip, or in general an MMU or FPU. If you're using an A2620, this will let you do stuff differently in a Startup Sequence depending on whether you're booting with the 68020 or the 68000. > thanks! -- Dave Haynie "The 32 Bit Guy" Commodore-Amiga "The Crew That Never Rests" {uunet|pyramid|rutgers}!cbmvax!daveh PLINK: D-DAVE H BIX: hazy Amiga -- It's not just a job, it's an obsession
tope@enea.se (Tommy Petersson) (03/30/89)
-in article <1455@wpi.wpi.edu>, pawn@wpi.wpi.edu (Kevin Goroway) says: - -> I was just told that Commodore displayed a 25 Mz version of the 68020 board -> at the Hanover Show in Germany? Is there any truth to this? - They showed a "pre-alfa" version of a 25 MHz 68030 (yes '30) board. The person I spoke with "hoped it wouldn't come out until late '90, since it's workings were so lousy... sorry - unpredictable". The '020 boards can have a faster '881 (25 MHz), but not the whole board. They also said that You couldn't just plug this faster '030 board in a normal 2000, some things had to be changed/added(?). It was fast anyway... I think GVP and other companies will beat Commodore in this race.
daveh@cbmvax.UUCP (Dave Haynie) (03/31/89)
in article <4396@enea.se>, tope@enea.se (Tommy Petersson) says: > UUCP-Path: uunet!enea!tope > -in article <1455@wpi.wpi.edu>, pawn@wpi.wpi.edu (Kevin Goroway) says: > -> I was just told that Commodore displayed a 25 Mz version of the 68020 board > -> at the Hanover Show in Germany? Is there any truth to this? > They showed a "pre-alfa" version of a 25 MHz 68030 (yes '30) board. > The person I spoke with... ...was very confused -- almost nothing mentioned here is even close to the truth. > I think GVP and other companies will beat Commodore in this race. Don't count your '030 boards before they hatch. Currently, no one is shipping a _real_ '030 board. And, as seen in the past, just because you're first doesn't mean you really work that well. Commodore wouldn't ship a board that doesn't work in a standard A2000.... -- Dave Haynie "The 32 Bit Guy" Commodore-Amiga "The Crew That Never Rests" {uunet|pyramid|rutgers}!cbmvax!daveh PLINK: D-DAVE H BIX: hazy Amiga -- It's not just a job, it's an obsession