Re: Apple 2c Variants

["Hilary M. Turner" <hilarymichael@ozemail.com.au>]

I do believe that you have a missing model. I had a model where in my IIc the
mouse was supported from #5. It had a excelerator with 2 Mg and did support a
3.5 drive from a GS because I used to do just that. Keep in mind that it was
the last model of the IIc released and I live in Australia. The dumping ground.
at that time, for most of the hardware they could not sell at home.

I remember the slot #5 thing because I had to patch every program that used the
mouse. It took me six month to find it because all the information I could get
on the subject said slot #4 or #7 till I started with one program and tried
starting at Slot #1 and continued to rewrite till I found that slot #5 worked
and it always puzzled why this worked this way. The only explanation was it was
a sample run which never was released.

Marcus wrote:

> Leslie Ayling schrieb in Nachricht <3c3eeb18@news.rivernet.com.au>...
> >Hi all,
> >
> >Just a quick question about the different varieties of Apple 2c's.
>
> Apple II
> Technical Notes
> ____________________________________________________________________________
> _
>                                                   Developer Technical
> Support
>
> Apple IIc
> #7:    Existing Versions
>
> Revised by:    Matt Deatherage                                  November
> 1988
> Written by:    Guillermo Ortiz                                  November
> 1987
>
> This Technical Note describes the main differences between the five
> different
> IIc ROM versions which encompass the original IIc and four revisions.
> ____________________________________________________________________________
> _
>
> Original IIc ( $FBBF = $FF )
>
> o    Can use the IIc external drive only
> o    No AppleTalk firmware
> o    PR#7 boots the second drive
> o    Mouse firmware maps to slot 4
> o    Serial firmware does not mask incoming linefeed characters
> o    Serial firmware does not support XON/XOFF protocol
>
> 3.5 ROM IIc ( $FBBF = $00 )
>
> o    Can use the IIc external drive and the UniDisk 3.5 drive
> o    AppleTalk firmware maps to slot 7
> o    PR#7 returns the message "AppleTalk Off Line"
> o    Mouse firmware maps to slot 4
> o    Serial firmware defaults to mask all incoming linefeed characters
> o    Serial firmware supports XON/XOFF protocol
>
> Original "Memory-Expandable" IIc ( $FBBF = $03 )
>
> o    Can use the IIc external drive, the UniDisk 3.5 drive, and the IIc
>      Memory Expansion Card
> o    Mouse firmware maps to slot 7
> o    No AppleTalk firmware
> o    PR#7 kills the system
> o    Serial firmware defaults to mask all incoming linefeed characters
> o    Serial firmware supports XON/XOFF protocol
>
> Revised "Memory-Expandable" IIc ( $FBBF = $04 )
>
> Same as Original Memory-Expandable, plus:
> o    Keyboard buffering firmware bug fixed
> o    Firmware returns correct information when the Memory Expansion Card is
>      not present
>
> Apple IIc Plus ( $FBBF = $05 )
>
> o    Can use the external IIc drive, the UniDisk 3.5 drive, the Apple 3.5
>      drives, but not the original IIc Memory Expansion Card.
> o    Contains a Memory Expansion Card connector
> o    3.5" internal drive replaces 5.25" internal drive
> o    Mouse maps to slot 7
> o    PR#7 kills the system
> o    4 MHz 65C02 microprocessor
> o    Accelerator chip and static RAM cache permit operation up to 4 MHz
> o    Keyboard replaced with Apple Standard Keyboard (minus numeric keypad)
> o    Internal power supply
> o    Internal modem connector
> o    Serial ports refitted with mini-DIN 8 connectors
> o    Headphone jack has been removed
> o    Volume control relocated above the keyboard
> o    40/80 column switch replaced by keyboard (Sholes/Dvorak) switch
>
> Further Reference
> ____________________________________________________________________________
> _
>   o  Apple IIc Technical Reference Manual, Second Edition
>   o  Apple IIc Technical Note #5, Memory Expansion on the Apple IIc
>   o  Apple IIc Technical Note #6, Buffering Blues
>   o  Apple II Miscellaneous Technical Note #2, Apple II Family
> Identification
>      Routines 2.1
>   o  Apple II Miscellaneous Technical Note #7, Apple II Family
> Identification
>   o  Apple II Miscellaneous Technical Note #8, Pascal 1.1 Firmware Protocol
>      ID Bytes