; MSGLOB.MAC    900709

; This file is included for interested hackers who might want to modify
; this patch area or suggest other configuration options that could be
; moved into this patch area.

; How to patch?  If you don't know, you probably shouldn't attempt it.
; But if you're interested, and don't yet have a favorite method,
; personally I prefer to edit on disk, using DU.  DON'T do it on a
; disk you can't afford to wipe out -- we all get it wrong from time
; to time, and don't say I didn't warn you!  Other favorites are disk
; editors such as SuperZap.  Some people prefer to load into memory,
; using a debugger such as DDT or ZSID, make modifications, and write
; out to disk.  Personally I dislike this, I find it too easy to write
; less than I ought to, resulting in a program which sometimes works
; and sometimes doesn't.  I'm told Z8E is also a good tool for this.
; Good luck.

; If patching is a black art for you, and you've sent me a generous
; registration fee, I'll do my best to send you a patched version, or
; write a patching utility, or something.  Tell me what disk formats
; you can read, and whether you have a modem.

	.Z80

; Constants set for different versions:
hazelt  equ     0               ; 1 for Hazletine video sequences
amstrad equ     1               ; 1 for Amstrad


; Constants, such as ASCII characters:
NL      EQU     0Ah             ; Newline character (translates to cr,lf)



; Content of MaxiSweep patch area (starts at 103h):

ViewLines::             ; 103h
        DB      23              ; (17h) No. of lines on screen view


SeqRVid::               ; 104h  ; Reverse video (no. of bytes, then bytes
                                ; to send to CP/M bios or terminal)
 if hazelt
        DB      2,7Eh,1Fh
 else
 if amstrad
        DB      2,1BH,70H
 else
        DB      0,0,0
 endif
 endif
        DB      0,0,0,0


SeqNVid::               ; 10Bh  ; Normal video
 if hazelt
        DB      2,7EH,19H
 else
 if amstrad
        DB      2,1BH,71H
 else
        DB      0,0,0
 endif
 endif
        DB      0,0,0,0


ChView1Line::           ; 112h
        DB      ' '             ; Character to be typed by user to scroll
                                ; only 1 line when viewing


ChVw1LineMask::         ; 113h
        db      0FFh            ; Change to 0DFh if ChView1Line is set
                                ; to a letter.  This allows letter to be
                                ; independant of case.


MultiSectorIO::
        db      1       ; 114h
                                ; Change to 0 to force single sector i/o
                                ; (intended for systems like TurboDos).
                                ; This is forced to 0 anyway if CP/M version
                                ; before 3.0 is seen during startup.


VTitle::                ; 115h  ; Message at bottom of screen when viewing
                                ; (0 byte terminates message)
	DB	NL
        DB      '^C/^X aborts, space advances a line, cr a page.'
	DB	NL,0

        DB      '-End-'         ; Not used in code, just a nice readable msg
                                ; Can be overwritten if you need a
                                ; slightly longer message in VTitle.


CmdLineBuf::                    ; If non-zero, and no command line, this
                                ; fakes a command line.  Don't include a
                                ; leading space, however.  Terminate with
                                ; a null, not a newline.
        dw      0,0,0,0,0,0,0,0
        dw      0,0,0,0,0,0,0,0
        dw      0,0,0,0,0,0,0,0
        dw      0,0,0,0,0,0,0,0
        dw      0,0,0,0,0,0,0,0
        dw      0,0,0,0,0,0,0,0
        dw      0,0,0,0,0,0,0,0
        dw      0,0,0,0,0,0,0,0 ; 128 bytes for command line

        DB      '-End-'         ; Not used in code, just a nice readable
                                ; message for humans to see the end of the
                                ; patch area.  Altering anything beyond
                                ; here is not advised.

	END