; Copyright (C) Reston Publishing Co. 1983
;  ---	important addresses
CpmBase 	equ	0000h	; standard system
CpmBasePage	equ	high CpmBase
WarmStart	equ	0000h+CpmBase ; vector to BIOS re-boot
Bdos		equ	0005h+CpmBase ; vector to CP/M BDOS
BdosAddress	equ	0006h+CpmBase ; address in the Bdos jump
CpmFcb		equ	005Ch+CpmBase ; dflt FCB, file operand 1
CpmFcb2 	equ	CpmFcb+10h+CpmBase ; file operand 2
CpmBuffer	equ	0080h	; offset to file buffer 80..FFh
CpmTail 	equ	CpmBuffer+CpmBase ; command tail
TransientArea	equ	0100h+CpmBase ; start of the .COM file
;  ---	Bdos service request numbers
BdosKeyin	equ	01h	; one console input byte
BdosType	equ	02h	; type byte at console
BdosPrint	equ	05h	; print one byte
BdosString	equ	09h	; type "string$" at console
BdosLine	equ	0Ah	; read a buffered console line
BdosTestCon	equ	0Bh	; test console, A>0 if key hit
BdosSetDrive	equ	0Eh	; select default drivecode
BdosOpen	equ	0Fh	; open a disk file
BdosClose	equ	10h	; close (output) file
BdosSrch1	equ	11h	; initial directory search
BdosSrchn	equ	12h	; successive directory searches
BdosErase	equ	13h	; erase a file
BdosRead	equ	14h	; read disk sequential
BdosWrite	equ	15h	; write disk sequential
BdosMake	equ	16h	; create a file directory entry
BdosRename	equ	17h	; rename file
BdosDrive	equ	19h	; get default drive number
BdosSetBuffer	equ	1Ah	; set file buffer address
BdosGetAlloc	equ	1Bh	; get address of alloc. vector
BdosGetDPB	equ	1Fh	; get address of DPB
;  ---	important ASCII values
AsciiBEL	equ	07h	; Bell
AsciiBS 	equ	08h	; Backspace
AsciiTAB	equ	09h	; Tab
AsciiLF 	equ	0Ah	; LineFeed
AsciiFF 	equ	0Ch	; Formfeed
AsciiCR 	equ	0Dh	; CarrierReturn
AsciiSO 	equ	0Eh	; Shift-out
AsciiSI 	equ	0Fh	; Shift-in
AsciiDC1	equ	11h	; turn device on (was XON)
AsciiDC2	equ	12h	; another on
AsciiDC3	equ	13h	; turn device off (was XOFF)
AsciiDC4	equ	14h	; another off
CpmEof		equ	1Ah	; ^Z, end of ascii file
AsciiESC	equ	1Bh	; escape character
AsciiBlank	equ	20h	; blank
AsciiDEL	equ	7Fh	; DEL, highest valid byte
;  ---	offsets in the Disk Parameter Block (DPB)
DPB@RPT 	equ	0	; records per track
DPB@BSH 	equ	2	; block-shift
DPB@BLM 	equ	3	; block-mask
DPB@EXM 	equ	4	; extent mask
DPB@DSM 	equ	5	; max allocation block number
DPB@DRM 	equ	7	; max directory entry number
DPB@ALN 	equ	9	; directory reservation bits
DPB@OFF 	equ	13	; directory track offset
;  --- decimal sign characters, use SET to change them
DecimalPlus	set	AsciiBlank
DecimalMinus	set	'-'
ectory track offset
;  --- decimal sign characters