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Amiga computer related discussion => Amiga Software Issues and Discussion => Topic started by: mrescher on September 11, 2004, 09:35:46 AM

Title: Emulating FAST RAM?
Post by: mrescher on September 11, 2004, 09:35:46 AM

Hi All - this is hopefully my last silly newbie question... but I have no idea what to search for even if it exists "emulate FAST RAM" will always return UAE links about emulation...

Anyway, what it is I want to do is tell my A600 to use 1 of it's 2Mb Chip RAM as FAST memory as some games don't seem to work... otherwise I guess I have to grab an old PCMCIA card from somewhere?

MCE

Title: Re: Emulating FAST RAM?
Post by: zipper on September 11, 2004, 10:49:50 AM

Many degraders like Tude and Degrader can do it I think.

Title: Re: Emulating FAST RAM?
Post by: Piru on September 11, 2004, 12:11:43 PM

Quote

Anyway, what it is I want to do is tell my A600 to use 1 of it's 2Mb Chip RAM as FAST memory as some games don't seem to work...

There are some tools like this, but they will help only with portion of the games.

Some of the games expect "ranger" memory at 0xC00000 (that is for example the 512K memory expansion of A500). The faked fastmem will appear at 0x100000 and PCMCIA memory at 0x600000, so neither will help these games. I think WHDLoad can fake the ranger memory with MMU, but that requires at least 68030 and some fast memory.

Some games (ones using AllocMem(x, MEMF_FAST), AllocVec(x, MEMF_FAST) or MEMF_FAST hunks will work, though.