(???) 0000 - $00FF (0 - 255): Zero Page
(???) 0100 - $01FF (256 - 511): 6502 Processor Stack
(???) 0200 - $02FF (512 - 767): Applesoft BASIC Input Buffer
(???) 0300 - $03CF (768 - 975): Free Space for Machine Language, Shape Table, etc.
(???) 03D0 - $03FF (976 - 1023): DOS, ProDOS, and Interrupt Vectors
(???) 0400 - $07FF (1024 - 2047): Text Video Page and Peripheral Screenholes
(???) 0800 - $0BFF (2048 - 3071): Text Video Page 2 and Applesoft Program
(???) 0C00 - $1FFF (3072 - 8191): Free Space for Machine Language, Shape Table, etc.
(???) 2000 - $3FFF (8192 - 16383): High Resolution Graphics Page 1
(???) 4000 - $5FFF (16384 - 24575): High Resolution Graphics Page 2
(???) 6000 - $95FF (24576 - 38399): Free Space for Machine Language, Shapes, etc.
(???) 9600 - $9CFF (38400 - 40191): DOS and ProDOS Disk I/O Buffers
(???) 9D00 - $BFFF (40192 - 49151): DOS or ProDOS Routines
(???) C000 - $C0FF (49152 - 49407): Soft Switches and Status Locations
(???) C100 - $C7FF (49408 - 51199): Peripheral Card Memory
(???) C800 - $CFFF (51200 - 53247): Extended Memory for Peripheral Card in Use
(???) - or --
(???) C100 - $C2FF (49408 - 49919): Extensions to System Monitor
(???) C300 - $C3FF (49920 - 50175): 80-Column Display Routines
(???) C400 - $C7FF (50176 - 51199): Self-Test Routines
(???) C800 - $CFFF (51200 - 53247): More 80-Column Display Routines
(???) D000 - $F7FF (53248 - 63487): Applesoft Interpreter
(???) F800 - $FFFF (63488 - 65535): System Monitor
(???) - or --
(???) D000 - $DFFF (53248 - 57343): Bank-Switched RAM
(???) E000 - $FFFF (57344 - 65535): More RAM
(???) -
(???) \/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/
(???) onrelay@napanet.net dimension18.cjb.net
(???) n Apple II fanatic since 1998! S0.5 LIS+++! Suzy+++! M1987
(???) Macintosh fanatic since 1996? OM0.1 OZY++ MIL+++! M1987
(???) n Ozy & Millie fanatic since 2000. MC1.0 CHL+++! TAM+++! M1987
(???) Remember, if it's not a secure web server, it's an _insecure_
(???) eb server!" -- Me
(???) *_ Syntax Error: an error on a criminal's tax record.
(???) | Bad Subscript: a criminal reading a book on a subway.
(???) --- Unimplemented Trap: when a bear trap isn't set up
(???) |' ,| properly and thus does not work.
(???) --- Overflow: too many ice cubes. <Can't Restart>
(???) Don't forget: Tammy Day on February 15th!
(???) lease remove capital letters from my e-mail address to respond.
(???) on Bettencourt <jonINTERNETrelayCHAT@napaVALLEYnet.CLARInet> wrote:
(???) $0200 - $02FF (512 - 767): Applesoft BASIC Input Buffer
(TN3) his is the input buffer for more than just Applesoft BASIC. It is
(???) ctually the buffer for the monitor's GETLN subroutine, which is used by
(???) oth Applesoft and Integer BASIC as well as the monitor itself (and the
(???) ini-Assembler). There are other programs which use this routine as
(???) ell.
(???) $9600 - $9CFF (38400 - 40191): DOS and ProDOS Disk I/O Buffers
(???) oth DOS 3.3 and ProDOS can use memory below $9600 for buffers. This is
(???) ontrolled by the MAXFILES command in DOS, and by the number of open
(???) iles in ProDOS (actually BASIC.SYSTEM, not the ProDOS kernel).
(TN3) he BASIC.SYSTEM I/O buffers end at $99FF, with code starting at $9A00.
(???) $9D00 - $BFFF (40192 - 49151): DOS or ProDOS Routines
(???) 9A00 - $BEFF Is BASIC.SYSTEM (not present if you are writing a ProDOS
(???) YS application). $BF00-$BFFF is the ProDOS kernel's global page.
(???) $C100 - $C7FF (49408 - 51199): Peripheral Card Memory
(???) $C800 - $CFFF (51200 - 53247): Extended Memory for Peripheral Card in Use
(???) -- or --
(???) $C100 - $C2FF (49408 - 49919): Extensions to System Monitor
(???) $C300 - $C3FF (49920 - 50175): 80-Column Display Routines
(???) $C400 - $C7FF (50176 - 51199): Self-Test Routines
(???) $C800 - $CFFF (51200 - 53247): More 80-Column Display Routines
(TN3) hese descriptions apply mainly to the IIe. The IIc may have a slightly
(DOC) ifferent arrangement, and I'm sure the IIgs does. None of this exists
(???) n the ][ or ][+.
(???) $D000 - $F7FF (53248 - 63487): Applesoft Interpreter
(???) $F800 - $FFFF (63488 - 65535): System Monitor
(???) lso note $E000-$F7FF are Integer BASIC and miscellaneous support
(???) outines (including the Mini-Assembler and Sweet-16 interpreter) on an
(???) riginal Apple ][ (or a ][+ with an Integer BASIC ROM card, or under
(IMG) nteger BASIC loaded into RAM in DOS 3.3). $D000-$D7FF is usually the
(???) Programmer's Aid #1" ROM in this configuration. I'm not sure what goes
n $D800-$DFFF in the RAM-based INTBASIC. (It is usually an empty
(SND) ocket in a ][ or an Integer BASIC ROM card.)
(???) $D000 - $DFFF (53248 - 57343): Bank-Switched RAM
(???) $E000 - $FFFF (57344 - 65535): More RAM
(TN3) he whole $D000-$FFFF area is called "Bank-switched RAM" in the IIe and
(???) ater machines. There are two 4K banks at $D000-$DFFF, and a further 8K
(SND) hared between the banks at $E000-$FFFF.
(IMG) n the ][ or ][+, this memory area only exists if a "language card" is
nstalled in slot 0. We old timers tend to call this area the "language
(???) ard" even in the IIe and later machines.
(???) -
(???) avid Empson
(DOC) empson@actrix.gen.nz
(???) nail mail: P O Box 27-103, Wellington, New Zealand