Oakland CPM Archive/oakcpm.iso/cpm/22rsx/rsx12.ark.2/BDOS.DEF

Text File | 1985-11-18 | 3.0 KB | 94 lines

; Definition of CPM 2.2.  "set" vars can be modified if needed.
;
; BDOS Functions:
@SYS    equ    0;    reinitialize
@KEY    equ    1;    input console char, echo
@CON    equ    2;    output console char
@RDR    equ    3;    input RDR char.
@PUN    equ    4;    output PUN char
@LST    equ    5;    output LST char
@DIO    equ    6;    Direct console i/o & status
@RIO    equ    7;    Get IO byte (2.2). Rdr status (3.0)
@SIO    equ    8;    Set IO byte (2.2). Pun status (3.0)
@MSG    equ    9;    String to console
@INP    equ    10;    Input string from console
@RDY    equ    11;    Console input ready
@VER    equ    12;    CPM version
@LOG    equ    13;    Reset disk system (^C)
@DSK    equ    14;    Select drive
@OPN    equ    15;    Open file
@CLS    equ    16;    Close file
@DIR    equ    17;    Search 1st Dir. entry
@NXT    equ    18;    Search next Dir. entry
@DEL    equ    19;    Delete file
@FRD    equ    20;    File read (sequential)
@FWR    equ    21;    File write (sequential)
@MAK    equ    22;    Make file
@REN    equ    23;    Rename file
@LGV    equ    24;    Log-in vector
@CUR    equ    25;    Get current disk
@DMA    equ    26;    Set DMA address
@ALO    equ    27;    Get disk allocation vector
@WPT    equ    28;    Write protect drive
@GRO    equ    29;    Get read/only vector (drives)
@CHG    equ    30;    Change file attributes
@GPM    equ    31;    Get disk parameter table pointer
@USR    equ    32;    Get/set current user
@RRD    equ    33;    Random record read
@RWR    equ    34;    Random record write
@SIZ    equ    35;    Get file size
@REC    equ    36;    Set random record to current sequential
@RDV    equ    37;    Reset (selected) drive(s)
;            38 and 39 are MPM functions
@WRZ    equ    40;    Random write w/zero fill
;
; some CPM 3.0 functions, for reference.  Match function if
; possible when a 2.2 RSX is created.
; 41 thru 50 are used
@CHN    equ    47;    Chain to command line in (dmaadr)
@OVL    equ    59;    Load overlay
;@RSX    equ    60;    Call RSX.  Different usage than here
; 98 thru 112 are used.  115 is CPM86 GSX graphics.
@PFN    equ    152;    parse filename
;
; System equates:
CPMBASE    set    0
boot    set    CPMBASE
iobyte    set    boot+3
drvusr    set    boot+4
bdos    set    boot+5
tfcb    set    boot+5CH
tfcb1    set    tfcb
tfcb2    set    tfcb+16
tbuff    set    boot+80H
TPA    set    boot+100H
fcblen    equ    36;        Length of input FCB, incl. random rcd
;
; Known CPM 2.2 definitions, for validation. Modify for other systems
BDOSARG    set    0011h;        Entry point jumps to this, relative
;                to the first page of BDOS proper
BDOSLGH    set    0eh;        BDOS is this many 256 byte pages long
CCPLGH    set    0800h;        CCP is this long. If this is not 800h
;                then the standard versions of RELOCCP
;                (.SYS & .OVR) must be revised.
;
; nvects is larger than the CPM 2.2 standard to allow for:
;   1. CPM 3 bios system
;   2. Other systems with extended bios calls and/or use
;      e.g. Kaypro has a key table, which some applications
;      alter (via the pointer at 1).  If the space is not
;      reserved system crashes will result.
nvects    set    29;        Number of BIOS vectors
n22vec    set    16;        Number of CPM 2.2 vectors
;
; Some control chars.
CTRL    equ    ' '-1;        CTRL CHAR MASK
CTRLC    equ    CTRL AND 'C'
BEL    equ    CTRL AND 'G'
BS    equ    CTRL AND 'H'
TAB    equ    CTRL AND 'I'
LF    equ    CTRL AND 'J'
FF    equ    CTRL AND 'L'
CR    equ    CTRL AND 'M'
eof    equ    CTRL AND 'Z'
vZ