On Fri, Oct 28, 2005 at 01:50:43PM -0700, richard jackson wrote: > Transwarp IIe: 256k RAM on board. any writes/reads to i/o locations > ($c000-$cfff, the slots on the motherboard, $400-$4000+8192, the > memory mapped text and graphics screens) slow the accelerator down, > access the motherboard at motherboard speed, and then resume speed.
If that's how a Transwarp IIe works, than that's how I think an accelerator card for the IIgs should be designed. > transwarp IIgs does it the same way, but it has a cache, and the CPU > takes care of some of the logic as far as when to slow down/speed up. > It does not have any RAM on board but somehow manages to access RAM at > high speed (the CPU runs fast, and can manage 1mhz data transfer on > the bus?) Maybe the card keeps a copy of a small amount of code and/or data in cache. If it needs something in cache, then all is well. If it is a miss, then the card has to wait for data to be returned. > I'd like to see the same thing. High speed CPU on a card, with large > RAM (16megabytes). Plus IDE connector on card so you can have HIGH > speed disk access. How about a serial connector on the card for high > speed comms. VGA port for high speed video? If we get to dream, why not skip the IDE connector altogether and just have 16 or 32 MB of flash memory for a "RAM" disk. Then, hopefully, we would have a IIgs with an "instant on" capability. Byron. -- Apple2list is sponsored by <http://lowendmac.com/> and... / Buy books, CDs, videos, and more from Amazon.com \ / <http://www.amazon.com/exec/obidos/redirect-home/lowendmac> \ Support Low End Mac <http://lowendmac.com/lists/support.html> Apple2list info: <http://lowendmac.com/lists/apple2.html> --> AOL users, remove "mailto:"; Send list messages to: <mailto:apple2list@mail.maclaunch.com> To unsubscribe, email: <mailto:[EMAIL PROTECTED]> For digest mode, email: <mailto:[EMAIL PROTECTED]> Subscription questions: <mailto:[EMAIL PROTECTED]> Archive: <http://www.mail-archive.com/apple2list%40mail.maclaunch.com/> iPod Accessories for Less at 1-800-iPOD.COM Fast Delivery, Low Price, Good Deal www.1800ipod.com
