m.tiernan@pro-angmar.UUCP (Michael Tiernan) (05/30/90)
In-Reply-To: message from THINGVOL@LAX.WISC.EDU
The 65816 can address 16Megs but the memory slot is intended to address only
8Mb. The other 8Megs was intended to be a ROM card that got plugged into it.
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"And the sweating of their souls can't wash the blood from off their hands."
- Phil Ochsgwyn@smoke.BRL.MIL (Doug Gwyn) (05/30/90)
In article <5517.apple.net@pro-angmar> m.tiernan@pro-angmar.UUCP (Michael Tiernan) writes: >The 65816 can address 16Megs but the memory slot is intended to address only >8Mb. The other 8Megs was intended to be a ROM card that got plugged into it. Quite wrong -- the upper 8MB of the address space is in fact used in the Apple IIGS, for the firmware among other things, and a portion of it is accessible via the memory expansion slot. There are memory cards that do support adding ROM in that memory space.
yk4@cunixb.cc.columbia.edu (Yong Su Kim) (09/21/90)
Does anyone know if the Octoram is DMA compatible? I have 2 1Meg SIMMS on it, and I was wondering if it was DMA compatible. PS. I have 4 256K SIMMS for sale... Leave me mail if you're interested. _____________________________________________________________________________ |Internet: yk4@cunixb.cc.columbia.edu |||||||||||Yong Su Kim|||||||||||| |Bitnet : yk4@cunixc |||||The Korean from Hong Kong|||| |UUCP : uunet!rutgers!columbia!cunixc!yk4 |||||||...Apple IIGS user...|||||| |____________________________________________||||||||||||||||||||||||||||||||||