JDB8042@RIGEL.TAMU.EDU (John D. Baker ->An Apple ZCPR3 nut//) (02/19/91)
To: Any and All Apple CP/M gurus (especially on the PCPI Applicard) Does anyone know if there are any problems with using one of the accelerated 6502 replacements (4, 8Mhz ZipChip) when running the PCPI Applicard's operating system? I assume that if you properly set it up, there should be no conflicts and you should actually see some performance improvement (except disk drives), especially in terms of character I/O. If anyone runs the Applicard (or even MS SoftCard) on an accelerated non-GS Apple ][, please let me know about what problems you have/had. Thanks. John D. Baker ->An Apple ZCPR3 nut // [PCPI ZMP1.5 Overlay under construction)
ianj@ijpc.UUCP (Ian Justman) (02/20/91)
JDB8042@RIGEL.TAMU.EDU (John D. Baker ->An Apple ZCPR3 nut//) writes: > To: Any and All Apple CP/M gurus (especially on the PCPI Applicard) I suppose I could qualify since I've written a few communicatons drivers for SoftCard/Applied Engineering CP/M. > I assume that if you properly set it up, there should be no conflicts and > you should actually see some performance improvement (except disk drives), > especially in terms of character I/O. It might increase performance, but I don't know enough to answer that because I don't know how the Applicard handles the Apple's timing, or even if it does, whch the Microsoft/Applied Engineering or any of their clones do. > If anyone runs the Applicard (or even MS SoftCard) on an accelerated > non-GS Apple ][, please let me know about what problems you have/had. Like I said, I don't know how or if the Applicard reacts or uses the Apple's clock system. One thing I _CAN_ tell you is that you CANNOT use the Zip Chip with a SoftCard "classic" which will work in any Apple II, so long as you use the standard 1MHz clock. You have to realize that this card (or the Z80c or any Z80-equipped Z-RAM for the Apple //c) is a DMA, or as I would prefer to call it, a bus master card, because it in effect, when activated, fully takes over the computer and makes the Apple a Z80-based computer and it talks DIRECTLY to the hardware, and is clocked DIRECTLY by the Apple's hardware. I was told by a Zip representative that it wouldn't work when he was at our locsal Apple group meeting a while ago. > Thanks. > > John D. Baker ->An Apple ZCPR3 nut // [PCPI ZMP1.5 Overlay under construction
mrapple@quack.sac.ca.us (Nick Sayer) (03/05/91)
rat@ruth.UUCP (David Douthitt) writes: >As an aside, can someone tell me if there are any other hard drives >you can use with a PCPI card besides the Sider? Ones that work with >Prodos? I wrote a pair of drivers that allowed you to use ProDOS devices under PCPI. One was for floppies and handled drives up to 2 MB, the other was for hard disks and allowed up to 8 MB, but it had to be non-removable (or you would have to make VERY sure to warm-boot if you swapped. Bye bye data otherwise). The trouble is that the vectors had to be sized in advance, so each potential drive took up a k or so of your TPA. All of the above is from memory. I could dig them up, but I'd rather not have to. They're widespread, I would hope. :-/ >What about SCSI? They are ProDOS devices, no? -- Nick Sayer | Think of me as a recombinant | RIP: Mel Blanc mrapple@quack.sac.ca.us | Simpson: Homer's looks, Lisa's | 1908-1989 N6QQQ [44.2.1.17] | brains, Bart's manners, and | May he never 209-952-5347 (Telebit) | Maggie's appetite for TV. --Me | be silenced.