In <_390b.12687$dk4.475517@typhoon.sonic.net> Don Bruder wrote: > In article <1fzvg76.n0b3w8o9skpgN%spam@luddite.ca>, > spam@luddite.ca (Ned Ludd) wrote: > >> Just noticed that both my //cs seem to have differing slots (or so >> copy II plus tells me...). Here's what I get when I use the catalog >> function: >> SELECT DEVICE: SELECT DEVICE: >> SLOT 3 DRIVE 2: /RAM DISCONNECTED SLOT 3 DRIVE 2: /RAM >> DISCONNECTED >> SLOT 6 DRIVE 1 SLOT 6 DRIVE 1 >> SLOT 6 DRIVE 2 SLOT 6 DRIVE 2 >> SLOT 5 DRIVE 1 SLOT 4 DRIVE 1 >> SLOT 5 DRIVE 2 >> >> Neither machine has any drives >> attached other than the internal 5.25" in S6D1... so why would S5 >> show up on one and S4 on the other? If I'm not mistaken, slot 4 >> should be the mouse port... anyway, when I try to catalog it I get "I/ >> O ERROR $2D" -- all others report "NO DISK IN DRIVE", which is >> reasonable... Any ideas? > > Different revisions, I'd guess. 5/1 & 5/2 were (I think...) the > original "standard" location for 3.5" drive controller cards early on, > while 4/1 became the "standard" later in the run. My copy of the Apple IIc Technical Reference Manual arrived in the mail today :o) The original IIc ROM had no support for the UniDisk 3.5 drives. The second revision added UniDisk 3.5 support mapped to slot 5. The third revision added memory expansion with the RAM disk it provided mapped to slot 4. This revision also moved the mouse from slot 4 to slot 7. Error $2D is the code for the Smartport error "BadBlock". This is caused when the block is out of range, in this case because there is no memory card installed! I don't know why slot 5 shows up as a disk controller in the first IIc but not the second, perhaps the way the Smartport software reported the number of disk drives attached changed between revisions. -- Roger Johnstone, Invercargill, New Zealand +------------------------------------------------+ | PS/2 Mouse Adapter for vintage Apple II or Mac | | order at http://vintageware.orcon.net.nz | +------------------------------------------------+ If this helps... My version 03 IIc with my CT100c hard drive, 1mb Ram IIc memory card, 2 UniDisks and an external 5.25" drive maps out with Slot Scan as such: s6d1 - internal 5.25 s6d2 - external 5.25 s5d1 - CT1 (1st partition of 100mb hd) s5d2 - CT2 (2nd partition of 100mb hd) s4d1 - ? (it just renders a question mark) s4d2 - ? (same thing as above) s3d1 - UniDisk #2 s3d2 - /RAM Disk s2d1 - CT3 (3rd partition of 100mb hd) s2d2 - UniDisk #1 The assignment of slots jumps to slot 2 aft3er slot 5 and works its way up from there. ----------------------- On Tue, 19 Aug 2003, Roger Johnstone wrote: > The original IIc ROM had no support for the UniDisk 3.5 drives. The > second revision added UniDisk 3.5 support mapped to slot 5. The third > revision added memory expansion with the RAM disk it provided mapped to > slot 4. This revision also moved the mouse from slot 4 to slot 7. > > Error $2D is the code for the Smartport error "BadBlock". This is caused > when the block is out of range, in this case because there is no memory > card installed! > > I don't know why slot 5 shows up as a disk controller in the first IIc > but not the second, perhaps the way the Smartport software reported the > number of disk drives attached changed between revisions.