Re: TransWarp ][: any info?

[Wayne Stewart <waynes@intergate.bc.ca>]

Roy and/or Janet Miller wrote:

> The card says "Transwarp" and "1985" the sticker on the ROM says version "1.3
> 1984" It has a single bank of 8 256Kx1 chips. The manual denies that the card
> uses caching technology (which I had read elsewhere that it had used), but
> claims that the Apple ROM is loaded into the RAM, some of the RAM is used by the
> card (for what I don't know) and that 64K is used to mirror the motherboard RAM,
> another 64K is used to mirror the aux RAM, but that the card accesses memory in
> the Aux slot at the full 3.6 mhz (which is nice since I have a 1 meg RAMWorks
> III card there) and that the card only slows down when accessing the motherboard
> RAM for video, or a slot that the dipswitch says must be accessed at 1 mhz (like
> the floppy drive controller card, or the SuperSerial card). The thing is, that
> if I could get a memory expansion for my //c+, it would still be faster than my
> //e (except my //e has a CMS SCSI card and harddrive card ;-)

No caching memory involved. The original TransWarp uses uses memory
replacement. I used to use a TransWarp in a IIe with bad RAM and it worked.
One day I got curious and pulled the motherboard RAM and it works fine. you
can also pull the motherboards processor if you want.

The TransWarp was only supposed to accelerate the first 64k of Auxiliary slot
RAM. One of the advertised benefits of the Rocketchip, Zipchip and TransWarp II
was being able to access all of the Auxiliary slot RAM at high speed.

    Wayne