Subject: Jon Relay's Apple II Info Archives (Part 2 of 2)
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Date: Mon, 07 Aug 2000 13:25:43 -0800
From: processoroverclocked@33mhz.cjb.net (Jon Bettencourt)
Newsgroups: comp.sys.apple2
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Jon Relay's Apple II Info Archives: 

* Zero Page Addresses
* ProDOS File Types
* Macintosh Computer Setups that Produce Readable ProDOS Disks
* Standard Color HiRes Information
* Video Display Theory
* Description of Memory Areas
* I/O Memory
* Screen Holes
* Graphics Modes
* Super Serial Card DIP Switches



### Screen Holes:

N is the slot number a card is in.

Apple II
--------
$0478    1144    Slot address of card using $C800 space
                 //c mouse: clamping minimum, lo byte
$04F8    1272    //c mouse: clamping maximum, lo byte
$0578    1400    //c mouse: clamping minimum, hi byte
$05F8    1528    //c mouse: clamping maximum, hi byte

Super Serial Card
-----------------
$0478+n  1144+n  Delay: b0-1=FF b2-3=LF b4-5=CR b6-7=translate option
$04F8+n  1272+n  Accumulator for firmware's command processor
$0578+n  1400+n  b0-2=cmd mode b3-5=slot to ch to b6=lc b7=terminal/CR
$05F8+n  1528+n  b0-6=command byte b7=zap control commands
$0678+n  1656+n  Error: b0=parity b1=framing b2=overrun b3=carrier b5=error
$06F8+n  1784+n  Modem Mode: b0-2=screen slot b3-7=$Cs00 space entry point
                 Printer Mode: current printer width
$0778+n  1912+n  Modem Mode: input buffer
                 Printer Mode: current column
$07F8+n  2040+n  b0=auto LF b1=comm.mode b2=keyb inp b3=chk XOFF b4=Pascal
                 b5=ignore LF b6=enable lc/tabs b7=echo

Apple IIc Serial
----------------
$0578+n  1400+n  printer width
$05F8+n  1528+n  scratch
$0678+n  1656+n  b7=parsing command string
$06F8+n  1784+n  current command character
$0778+n  1912+n  b6=auto LF b7=echo
$07F8+n  2040+n  current printer column

80-Column Card
--------------
$0478+n  1144+n  address of last output routine used by firmware
$04F8+n  1272+n  video firmware operating mode
$0578+n  1400+n  horizontal cursor position
$05F8+n  1528+n  vertical cursor position
$0678+n  1656+n  character to be printed/read
$06F8+n  1784+n  Pascal GOTOXY X coordinate
$0778+n  1912+n  scratch
$07F8+n  2040+n  scratch

Mouse Card
----------
$0478+n  1144+n  X coordinate, lo byte
$04F8+n  1272+n  Y coordinate, lo byte
$0578+n  1400+n  X coordinate, hi byte
$05F8+n  1528+n  Y coordinate, hi byte
$0778+n  1912+n  status: b1=movement int b2=button int b3=VBL int
                 b5=movement b6=still down from last b7=button down
$07F8+n  2040+n  mode: b0=active b1=VBL on move b2=VBL on button b3=VBL

Apple IIc Auxilary Memory
-------------------------
$0478    1144    printer port ACIA control reg
$0479    1145    printer port ACIA command reg
$047A    1146    printer port flags: b0=comm b6=auto LF b7=echo
$047B    1147    printer port printer width
$047C    1148    modem port ACIA control reg
$047D    1149    modem port ACIA command reg
$047E    1150    modem port flags: b0=comm b6=auto LF b7=echo
$047F    1151    modem port line length


### Graphics Modes:

.____________________________________________________________________________.
|Name                                   |Gr/Tx|Resol|Cols|AN3|NEWVIDEO|VGCINT|
|---------------------------------------+-----+-----+----+---+--------+------|
|40-Column Text                         |TEXT |IRR  |40  |IRR|1       |64    |
|---------------------------------------+-----+-----+----+---+--------+------|
|80-Column Text                         |TEXT |IRR  |80  |IRR|1       |64    |
|---------------------------------------+-----+-----+----+---+--------+------|
|Color 40-Column Text *                 |TEXT |IRR  |40  |OFF| Not on | IIgs |
|---------------------------------------+-----+-----+----+---+--------+------|
|Lo-Res Graphics                        |GR   |LOW  |IRR |ON |1       |64    |
|---------------------------------------+-----+-----+----+---+--------+------|
|Double Lo-Res Graphics                 |GR   |LOW  |80  |OFF|1       |64    |
|---------------------------------------+-----+-----+----+---+--------+------|
|Lo-Res Graphics w/ HiRes Bit Patterns  |GR   |LOW  |40  |OFF|1       |64    |
|---------------------------------------+-----+-----+----+---+--------+------|
|Hi-Res Graphics                        |GR   |HIGH |IRR |ON |1       |64    |
|---------------------------------------+-----+-----+----+---+--------+------|
|Double Hi-Res Graphics                 |GR   |HIGH |80  |OFF|1       |64    |
|---------------------------------------+-----+-----+----+---+--------+------|
|320x200 w/ 16 Colors, 16 Colors/Line,  |IRR  |IRR  |IRR |IRR|129     |???   |
|           1 Palette                   |     |     |    |   |        |      |
|---------------------------------------+-----+-----+----+---+--------+------|
|320x200 w/ 256 Colors; 16 Colors/Line, |IRR  |IRR  |IRR |IRR|129     |???   |
|           16 Palettes                 |     |     |    |   |        |      |
|---------------------------------------+-----+-----+----+---+--------+------|
|320x200 w/ 3200 Colors; 16 Colors/Line,|IRR  |IRR  |IRR |IRR|129     |???   |
|           200 Palettes                |     |     |    |   |        |      |
|---------------------------------------+-----+-----+----+---+--------+------|
|640x200 w/ 4 Pure Colors               |IRR  |IRR  |IRR |IRR|129     |???   |
|---------------------------------------+-----+-----+----+---+--------+------|
|640x200 w/ 16 Dithered Colors; 4 Colors|IRR  |IRR  |IRR |IRR|129     |???   |
|           on Odd Columns, 4 Colors on |     |     |    |   |        |      |
|           Even Columns                |     |     |    |   |        |      |
|---------------------------------------+-----+-----+----+---+--------+------|
|Fill Mode                              |IRR  |IRR  |IRR |IRR|129     |???   |
|---------------------------------------+-----+-----+----+---+--------+------|
|640x480 @ 24b <- up to -> 1024x768 @ 8b|       VIA SECOND SIGHT CARD        |
|---------------------------------------+------------------------------------|
| * This mode only works on RGB monitors connected to AppleColor 80-column   |
|   cards. It requires the 80-column firmware to be active, but showing 40   |
|   columns. It uses auxilary memory to determine the foreground and         |
|   background colors.                                                       |
'----------------------------------------------------------------------------'


### Super Serial Card DIP Switches

 .______________________ Switch Block #1 ______________________.
 |Switch number      Definition | Switch number      Definition|
 |------------------------------|------------------------------|
 |1   2   3   4       Baud Rate | 5   6            Mode Setting|
 |==============================|==============================|
 |ON  ON  ON  ON      Undefined | ON  ON         Communications|
 |ON  ON  ON  OFF            50 | OFF ON                Printer|
 |ON  ON  OFF ON             75 | ON  OFF      SIC P8 emulation|
 |ON  ON  OFF OFF           110 | OFF OFF     SIC P8A emulation|
 |ON  OFF ON  ON            135 |______________________________'
 |ON  OFF ON  OFF           150 |
 |ON  OFF OFF ON            300 |
 |ON  OFF OFF OFF           600 |
 |OFF ON  ON  ON           1200 |
 |OFF ON  OFF ON           2400 |
 |OFF ON  OFF OFF          3600 |
 |OFF OFF ON  ON           4800 |
 |OFF OFF ON  OFF          7200 |
 |OFF OFF OFF ON           9600 |
 |OFF OFF OFF OFF         19200 |
 '______________________________'
  
 .______________________ Switch Block #2 _____________________________.
 |Switch   Definition  | Switch  Def | Switch    Definition           |
 |---------------------|-------------|--------------------------------|
 |1        Data Format | 2  CR delay | 3   4     Line width/video     |
 |=====================|=============|================================|
 |ON   8 data, 1 stop  | ON   32 ms  | ON  ON   40 columns, video ON  |
 |OFF  8 data, 2 stop  | OFF  none   | ON  OFF  72 columns, video OFF |
 |                     |             | OFF ON   80 columns, video OFF |
 |                     |             | OFF OFF  132 columns, video OFF|
 '_____________________|_____________|________________________________'

 .____________ Switch Block #2 cont'd __________. ._____ Handshaking _____.
 |Switch   Definition  | Switch  Definition     | | Switch    Definition  |
 |---------------------|------------------------| |-----------------------|
 |5    Linefeeds       | 6       Interrupts     | | 1-7/2-7     CTS       |
 |---------------------|------------------------| |-----------------------|
 |ON   add LF after CR | ON      Interrupts on  | | ON/OFF Normal (Pin 20)|
 |OFF  don't add LFs   | OFF     No interrupts  | | OFF/ON Alt    (Pin 19)|
 '_____________________|________________________' '_______________________'
 .______________________________..________________________________________.
 |  Connector Pin Assignments   ||         Jumper Block Wiring            |
 |------------------------------||----------------------------------------|
 |  10 Pin   DB-25      Signal  || SSC signal  MODEM (pin) TERMINAL (pin) |
 |  Header  Connector    Name   ||----------------------------------------|
 |------------------------------||    TXD         TXD   2       RXD  3    |
 |    1        1      Frame GND ||    RXD         RXD   3       TXD  2    |
 |    2        2        TXD     ||    RTS         RTS   4       DCD  8    |
 |    3        3        RXD     ||    CTS         CTS   5       DCD  8    |
 |    4        4        RTS     ||    DSR         DSR   6       DTR 20    |
 |    5        5        CTS     ||    DCD         DCD   8       RTS  4    |
 |    6        6        DSR     ||    DCD         DCD   8       CTS  5    |
 |    7       19       SCTS     ||    DTR         DTR  20       DSR  6    |
 |    8        7     Signal GND ||----------------------------------------|
 |    9       20        DTR     || Note that RS-232-C signals on the SSC  |
 |   10        8        DCD     || use negative-true logic; that is, they |
 '______________________________'| are true at 0v and false at +5 volts   |
                                 '________________________________________'
 ._________________________________________. ._____________________.
 | Explanation Of Signals                  | |    Jumper Block     |
 | ----------------------------------------| |---------------------|
 | GND     Ground, either Frame or Signal  | |       MODEM         |
 | TXD     Transmit Data                   | |   ______________    |
 | RXD     Receive Data                    | |  |              |   |
 | RTS     Request To Send                 | |  |      /\      |   |
 | CTS     Clear To Send                   | |  |     /__\     |   |
 | DSR     Data Set Ready                  | |  |______________|   |
 | SCTS    Secondary CTS                   | |                     |
 | DTR     Data Terminal Ready             | |      TERMINAL       |
 | DCD     Data Carrier Detect             | |      (Printer)      |
 '_________________________________________' '_____________________'
  
 Pins 1-7 and 2-7 are set together to determine the SSC pin to be read
 for the Hardware Handshaking signal. Generally set to monitor Pin #20.
  
 Common Configurations: [Don't Forget The JUMPER Block]
  
        Hi Speed Modem                  ImageWriter I/II
       1234567  1234567                 1234567  1234567
 ON     XXXXXX  XXXXXX                     X XX  X  XX
 OFF   X              X                 XXX X     XX  XX

-- 
Tammy and TIA ----> Jon.

= dimension18.cjb.net === ICQ# 76731065 === jonrelay@napanet.net =
In the words of Olivia: Eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee!