CP/M/CPM_CDROM.iso/cpm/zcpr2/page.mac

Text File | 1994-07-13 | 26.3 KB | 1,307 lines

;
;  PROGRAM:  PAGE
;  VERSION:  1.2
;  DATE:  26 Apr 83
;  AUTHOR:  RICHARD CONN
;  PREVIOUS VERSIONS:  1.1 (25 Apr 83), 1.0 (22 Apr 83)
;
VERS    equ    12

;
;    PAGE is THE file screen print utility for ZCPR2.  Installable by
; GENINS, PAGE provides a wide range of options for the user.  First, PAGE
; allows the user to employ wild cards and file name lists (lists of files
; separated by commas, like: file1,file2,file3,...).  Second, PAGE provides
; the following options:
;        0-9    Set Character Print Speed Delay
;        I    Inspect Files
;                The user approves each file to be printed
;                before the printing process begins
;        L    Toggle Line Numbering
;                Each line may or may not begin with a line
;                number
;        P    Toggle Screen Paging
;        Snnnn    Skip to Specified Page
;                Printing begins on the indicated page
;
;    During paged output, various parameters can be changed dynamically.
; In particular, the letter P toggles screen paging and the digits 0-9
; vary the speed WHILE the output is being presented.  The effect is immediate.
; Control characters may be used to perform additional control functions:
; ^S pauses the output, ^X aborts paging of current file and advances to
; the next file, and ^C aborts to the operating system.
;


;
;    This program is Copyright (c) 1983 by Richard Conn
;    All Rights Reserved
;
;    ZCPR2 and its utilities, including this one, are released
; to the public domain.  Anyone who wishes to USE them may do so with
; no strings attached.  The author assumes no responsibility or
; liability for the use of ZCPR2 and its utilities.
;
;    The author, Richard Conn, has sole rights to this program.
; ZCPR2 and its utilities may not be sold without the express,
; written permission of the author.
;

FALSE    EQU    0
TRUE    EQU    NOT FALSE

;
;  BASIC SYSLIB ROUTINES NEEDED BY TEMPLATE
;
ESIZE    EQU    16    ; SIZE OF DIR ENTRY (FROM SYSLIB DIRF ROUTINE)

    EXT    DIRFS    ; DIRECTORY PROCESSOR
    EXT    DIRPACK    ; PACK DIRECTORY

    EXT    ZGPINS    ; INIT BUFFERS
    EXT    ZFNAME    ; FILE NAME PROCESSOR

    EXT    INITFCB    ; INIT FCB
    EXT    RETUD    ; RETURN CURRENT USER/DISK
    EXT    PUTUD    ; SAVE CURRENT USER/DISK
    EXT    GETUD    ; RESTORE CURRENT USER/DISK
    EXT    LOGUD    ; LOG INTO USER/DISK
    EXT    PRINT    ; PRINT STRING PTED TO BY RET ADR
    EXT    PADC    ; PRINT A IN DEC
    EXT    COUT    ; CONSOLE OUTPUT ROUTINE
    EXT    CST    ; CONSOLE STATUS ROUTINE
    EXT    CIN    ; CONSOLE INPUT ROUTINE
    EXT    CAPS    ; CAPITALIZE ROUTINE
    EXT    CRLF    ; NEW LINE ROUTINE
    EXT    CLINE    ; COMMAND LINE STRING SAVE ROUTINE
    EXT    CODEND    ; CODE END COMPUTATION ROUTINE

    EXT    F$OPEN    ; FILE OPEN
    EXT    F$READ    ; BLOCK READ
    EXT    F$CLOSE    ; FILE CLOSE

    EXT    EVAL10    ; STRING TO BINARY CONVERSION
    EXT    PHLDC    ; PRINT HL IN DECIMAL ROUTINE
    EXT    MOVEB    ; MOVEB ROUTINE

;
;  CP/M EQUATES
;
CPM    EQU    0    ; WARM BOOT
BDOSE    EQU    CPM+5    ; BDOS ENTRY
FCB    EQU    CPM+5CH    ; FCB
TBUFF    EQU    CPM+80H    ; INPUT LINE BUFFER
DEL    EQU    7FH    ; <DEL>
CR    EQU    13    ; <CR>
FF    EQU    12    ; <FF>
LF    EQU    10    ; <LF>
CTRLC    EQU    'C'-'@'    ; ^C
CTRLG    EQU    'G'-'@'
CTRLH    EQU    'H'-'@'
CTRLI    EQU    'I'-'@'
CTRLS    EQU    'S'-'@'
CTRLX    EQU    'X'-'@'
CTRLZ    EQU    'Z'-'@'

;
;  OTHER EQUATES
;
EOLD    EQU    0FFH    ; END OF LOAD DELIMITER

;
;  Branch to Start of Program
;
    JMP    START

;
;******************************************************************
;
;  SINSFORM -- ZCPR2 Utility Standard General Purpose Initialization Format
;
;    This data block precisely defines the data format for
; initial features of a ZCPR2 system which are required for proper
; initialization of the ZCPR2-Specific Routines in SYSLIB.
;

;
;  EXTERNAL PATH DATA
;
EPAVAIL:
    DB    0FFH    ; IS EXTERNAL PATH AVAILABLE? (0=NO, 0FFH=YES)
EPADR:
    DW    40H    ; ADDRESS OF EXTERNAL PATH IF AVAILABLE

;
;  INTERNAL PATH DATA
;
INTPATH:
    DB    0,0    ; DISK, USER FOR FIRST PATH ELEMENT
            ; DISK = 1 FOR A, '$' FOR CURRENT
            ; USER = NUMBER, '$' FOR CURRENT
    DB    0,0
    DB    0,0
    DB    0,0
    DB    0,0
    DB    0,0
    DB    0,0
    DB    0,0    ; DISK, USER FOR 8TH PATH ELEMENT
    DB    0    ; END OF PATH

;
;  MULTIPLE COMMAND LINE BUFFER DATA
;
MCAVAIL:
    DB    0FFH    ; IS MULTIPLE COMMAND LINE BUFFER AVAILABLE?
MCADR:
    DW    0FF00H    ; ADDRESS OF MULTIPLE COMMAND LINE BUFFER IF AVAILABLE

;
;  DISK/USER LIMITS
;
MDISK:
    DB    4    ; MAXIMUM NUMBER OF DISKS
MUSER:
    DB    31    ; MAXIMUM USER NUMBER

;
;  FLAGS TO PERMIT LOG IN FOR DIFFERENT USER AREA OR DISK
;
DOK:
    DB    0FFH    ; ALLOW DISK CHANGE? (0=NO, 0FFH=YES)
UOK:
    DB    0FFH    ; ALLOW USER CHANGE? (0=NO, 0FFH=YES)

;
;  PRIVILEGED USER DATA
;
PUSER:
    DB    10    ; BEGINNING OF PRIVILEGED USER AREAS
PPASS:
    DB    'chdir',0    ; PASSWORD FOR MOVING INTO PRIV USER AREAS
    DS    41-($-PPASS)    ; 40 CHARS MAX IN BUFFER + 1 for ending NULL

;
;  CURRENT USER/DISK INDICATOR
;
CINDIC:
    DB    '$'    ; USUAL VALUE (FOR PATH EXPRESSIONS)

;
;  DMA ADDRESS FOR DISK TRANSFERS
;
DMADR:
    DW    80H    ; TBUFF AREA

;
;  NAMED DIRECTORY INFORMATION
;
NDRADR:
    DW    00000H    ; ADDRESS OF MEMORY-RESIDENT NAMED DIRECTORY
NDNAMES:
    DB    64    ; MAX NUMBER OF DIRECTORY NAMES
DNFILE:
    DB    'NAMES   '    ; NAME OF DISK NAME FILE
    DB    'DIR'        ; TYPE OF DISK NAME FILE

;
;  REQUIREMENTS FLAGS
;
EPREQD:
    DB    0FFH    ; EXTERNAL PATH?
MCREQD:
    DB    000H    ; MULTIPLE COMMAND LINE?
MXREQD:
    DB    0FFH    ; MAX USER/DISK?
UDREQD:
    DB    000H    ; ALLOW USER/DISK CHANGE?
PUREQD:
    DB    000H    ; PRIVILEGED USER?
CDREQD:
    DB    0FFH    ; CURRENT INDIC AND DMA?
NDREQD:
    DB    0FFH    ; NAMED DIRECTORIES?
Z2CLASS:
    DB    11    ; CLASS 11
    DB    'ZCPR2'
    DS    10    ; RESERVED

;
;  END OF SINSFORM -- STANDARD DEFAULT PARAMETER DATA
;
;******************************************************************
;

;
;  **** Special Initial Value Area for GENINS
;
LWIDTH:
    DB    132    ; WIDTH OF LINE
LTPP:
    DB    44    ; LINES OF TEXT PER PAGE
LSPP:
    DB    5    ; LINES TO SKIP PER PAGE
CWIDTH:
    DB    80    ; WIDTH OF SCREEN
CTPP:
    DB    22    ; LINES OF TEXT PER SCREEN
CSPP:
    DB    1    ; LINES TO SKIP PER SCREEN
;
;  NOTE:  LTPP + LSPP + 2 (HEADER SIZE) = TOTAL LINES PER PAGE ON PRINTER
;  NOTE:  CTPP + CSPP + 1 (FOOTER SIZE) = TOTAL LINES PER SCREEN ON CONSOLE
;
DLNUMFL:
    DB    0    ; LINE NUMBER FLAG (DEFAULT TO NO)
DPAGEFL:
    DB    0FFH    ; PAGE NUMBER FLAG (DEFAULT TO YES)
DINSPECT:
    DB    0    ; INSPECT FILES (DEFAULT TO NO)
DDELAY:
    DB    0    ; DELAY COUNT (DEFAULT TO 0)
;
;  OTHER BUFFERS
;
SKIPFL:
    DB    0    ; SKIP FLAG (DEFAULT TO NO)
SKIPNUM:
    DS    2    ; PAGE NUMBER TO SKIP TO
LNUM:
    DS    2    ; CURRENT LINE NUMBER
PNUM:
    DS    2    ; CURRENT PAGE NUMBER
LNUMFL:
    DB    0    ; LINE NUMBER FLAG (DEFAULT TO NO)
PAGEFL:
    DB    0FFH    ; PAGE NUMBER FLAG (DEFAULT TO YES)
INSPECT:
    DB    0    ; INSPECT FILES (DEFAULT TO NO)
DELAY:
    DB    0    ; DELAY COUNT (DEFAULT TO 0)

;
;  Start of Program
;
START:
    LXI    H,0    ; GET STACK PTR
    DAD    SP
    SHLD    STACK    ; SAVE IT
    LXI    SP,STACK    ; SET SP
    CALL    PUTUD    ; SAVE CURRENT USER/DISK AWAY
    CALL    RETUD    ; GET CURRENT USER/DISK
    MOV    A,B    ; SAVE DISK
    STA    DISK
    MOV    A,C    ; SAVE USER
    STA    USER

    CALL    ZGPINS    ; INIT BUFFERS

    LXI    H,TBUFF    ; SAVE COMMAND LINE
    CALL    CLINE
    SHLD    CMDLNE    ; SAVE PTR

;
;  **** Banner of Program
;
    CALL    PRINT
    DB    'PAGE,  Version '
    DB    VERS/10+'0','.',(VERS MOD 10)+'0',0

;
;  Check for Help Request
;
    LDA    FCB+1    ; GET FIRST CHAR OF FILE NAME
    CPI    ' '    ; NO FILE SPEC?
    JZ    HELP
    CPI    '/'    ; OPTION CAUGHT?
    JNZ    ECONT

;
;  **** Print Help Information
;
HELP:
    CALL    PRINT
    DB    CR,LF,'PAGE Command --'
    db    cr,lf,'    PAGE is invoked by the following command line:'
    db    cr,lf,'        PAGE file1,file2,...,filen o...'
    db    cr,lf,'where each "filen" is an ambiguous file name and type'
    db    cr,lf,'and "o" is zero or more of the following options:'
    db    cr,lf,'    0-9    Select Delay Constant'
    db    cr,lf,'    I    Inspect and Select Files First'
    db    cr,lf,'    L    Toggle Numbering of Each Line'
    db    cr,lf,'    P    Toggle Paging'
    db    cr,lf,'    Snnnn    Skip to Specified Page before Printing'
    db    cr,lf,'Examples:'
    db    cr,lf,'      PAGE MYFILE.TXT,*.MAC LI'
    db    cr,lf,'        -- Number Lines, Inspect Files'
    db    cr,lf,'      PRINT MYFILE.* S25'
    db    cr,lf,'        -- Skip to Page 25'
    db    cr,lf
    db    cr,lf,'    While the displays are being printed, the user may'
    db    cr,lf,'strike ^C to abort PAGE, ^X to skip to next file,'
    db    cr,lf,'^S to suspend output (any key will resume, and ^C, ^X,'
    db    cr,lf,'P, and 0-9 are effective as commands at this point),'
    db    cr,lf,'P to toggle the paging, or a digit (0-9) to change'
    db    cr,lf,'the speed of the display'
    DB    0

;
;  RETURN TO OS
;
RETURN:
    LHLD    STACK    ; GET OLD STACK
    SPHL        ; SET IT
    RET

;
;  PROGRAM'S INIT ROUTINE
;
ECONT:
    CALL    INIT    ; PROG INIT ROUTINE
;
;  EXTRACT FLAGS IF PRESENT
;
    LXI    H,0    ; SET FILE COUNT
    SHLD    FILECNT
    LHLD    CMDLNE    ; PT TO BUFFER
;
;  SKIP TO FILE NAME STRING
;
    CALL    SBLANK    ; SKIP OVER BLANKS
;
;  SKIP TO END OF FILE NAME STRING
;
    CALL    SNBLANK    ; SKIP OVER NON-BLANKS
;
;  CHECK FOR LEADING SLASH ON OPTION AND SKIP IT IF SO
;
OPT:
    CPI    '/'    ; OPTION CHAR?
    JNZ    OPTION
    INX    H    ; SKIP SLASH
;
;  PROCESS LIST OF OPTIONS
;
OPTION:
    MOV    A,M    ; GET BYTE
    ORA    A    ; DONE?
    JZ    DSPEC
    INX    H    ; PT TO NEXT CHAR
    CPI    ' '    ; SKIP OVER SPACES
    JZ    OPTION
    MOV    C,A    ; COMMAND IN C
    LXI    D,OPTAB    ; PT TO OPTION TABLE
OPTL:
    LDAX    D    ; GET OPTION LETTER
    ORA    A    ; END OF TABLE?
    JZ    HELP    ; HELP IF SO
    CMP    C    ; MATCH?
    JZ    OPTM    ; PROCESS IF SO
    INX    D    ; PT TO NEXT ENTRY
    INX    D
    INX    D
    JMP    OPTL
;
;  PROCESS OPTION
;
OPTM:
    PUSH    H    ; SAVE HL ON STACK
    LXI    H,OPTION    ; GET RETURN ADDRESS
    XTHL        ; ... ON STACK AND RESTORE HL
    INX    D    ; PT TO ADDRESS
    LDAX    D    ; GET ADDRESS LOW
    MOV    B,A    ; ... IN B
    INX    D
    LDAX    D    ; GET ADDRESS HIGH
    MOV    D,A    ; ... IN D
    MOV    E,B    ; LOW IN E
    PUSH    D    ; PUT ADDRESS ON STACK
    MOV    A,C    ; COMMAND IN A
    RET        ; "CALL" OPTION ROUTINE

;
;  **** PROGRAM INIT ROUTINE
;    THIS ROUTINE IS USED BY THE PROGRAM TO PERFORM ANY INITS
;
INIT:
    lxi    h,dlnumfl    ;copy defaults into buffers
    lxi    d,lnumfl
    mvi    b,4        ;4 bytes
    call    moveb        ;do copy
    xra    a    ;A=0
    sta    skipfl    ;set no skip
    RET

;
;  **** OPTION TABLE
;    EACH OPTION IS A CAPITAL LETTER OR SPECIAL CHAR FOLLOWED BY
;        AN ADDRESS; THE TABLE IS TERMINATED BY A BINARY ZERO
;
OPTAB:
    db    '0'
    dw    optnum
    db    '1'
    dw    optnum
    db    '2'
    dw    optnum
    db    '3'
    dw    optnum
    db    '4'
    dw    optnum
    db    '5'
    dw    optnum
    db    '6'
    dw    optnum
    db    '7'
    dw    optnum
    db    '8'
    dw    optnum
    db    '9'
    dw    optnum
    db    'I'
    dw    optinsp
    db    'L'
    dw    optln
    db    'P'
    dw    optpage
    db    'S'
    dw    optskip
    DB    0    ; END OF TABLE
;
;  Set Delay Constant
;
optnum:
    sui    '0'    ;set constant
    sta    delay
    ret
;
;  Toggle Inspect Option
;
optinsp:
    lda    inspect    ;flip flag
    cma
    sta    inspect
    ret
;
;  Set Line Number Flag
;
optln:
    lda    lnumfl    ;flip flag
    cma
    sta    lnumfl
    ret
;
;  Toggle Paging
;
optpage:
    lda    pagefl    ;flip flag
    cma
    sta    pagefl
    ret
;
;  Set Skip Flag and get number
;
optskip:
    mvi    a,0ffh    ;set flag
    sta    skipfl
    call    eval10    ;get number
    xchg
    shld    skipnum    ;set page number to skip to
    xchg        ;HL pts to next char
    mov    a,d    ;see if page number was zero
    ora    e
    jnz    option
    xra    a    ;if zero, just turn off skip flag
    sta    skipfl
    ret
;
;  BEGIN MOVING THROUGH FILE NAMES, SEPARATED BY COMMAS
;
DSPEC:
    LHLD    CMDLNE    ; PT TO FIRST BYTE
    CALL    SBLANK    ; SKIP TO NON-BLANK
;
;  MAJOR REENTRY POINT WHEN FILE SPECS ARE SEPARATED BY COMMAS
;    HL PTS TO FIRST BYTE OF NEXT FILE SPEC
;
DSPEC1:
    LXI    SP,STACK    ; RESET STACK
    CALL    GETUD    ; RESET USER IF NECESSARY
    LXI    D,NTFCB    ; PT TO FCB IN DE, PT TO FIRST CHAR OF FILE NAME IN HL

    CALL    ZFNAME    ; EXTRACT FILE NAME INTO FCB, AND GET DISK AND USER
    JZ    DERR    ; ERROR HANDLER

    SHLD    NEXTCH    ; SAVE PTR TO DELIMITER WHICH ENDED SCAN
    MOV    A,B    ; SAVE POSSIBLE DRIVE SPEC
    CPI    0FFH    ; CURRENT DISK?
    JZ    DSPEC2
    LDA    MDISK    ; GET MAX DISK NUMBER
    DCR    B    ; ADJUST TO WITHIN BOUNDS 0-15
    CMP    B    ; WITHIN BOUNDS?
    MOV    A,B    ; GET DISK NUMBER IN A
    JNC    USPEC
DERR:
    CALL    PRINT
    DB    CR,LF,'Invalid Disk Specification',0
    JMP    DRETURN

;
;  SET CURRENT DISK
;
DSPEC2:
    LDA    DISK    ;GET CURRENT DISK
    MOV    B,A    ;... IN B

;  CHECK FOR USER NUMBER
USPEC:
    MOV    A,C    ; GET NEW USER NUMBER
    CPI    0FFH    ; DEFAULT USER?
    JZ    USPEC1
    CPI    '?'    ; ALL USERS NOT ALLOWED?
    JZ    UERR
    LDA    MUSER    ; GET MAX USER NUMBER
    CMP    C
    MOV    A,C    ; USER NUMBER IN A
    JNC    FCT
UERR:
    CALL    PRINT
    DB    CR,LF,'Invalid User Number',0
    JMP    DRETURN
USPEC1:
    LDA    USER    ;GET CURRENT USER
    MOV    C,A    ;... IN C

;
;  LOAD DIRECTORY AND PERFORM FUNCTION
;
FCT:
    MOV    A,B    ; SAVE NEW DISK/USER AWAY
    STA    CDISK    ; CURRENT DISK
    MOV    A,C
    STA    CUSER    ; CURRENT USER
    CALL    LOGUD    ; LOG INTO ACCOUNT
    CALL    CODEND    ; PT TO END OF CODE
    CALL    RETUD    ; GET USER NUMBER FOR DIRFS
    MVI    A,11000000B    ; SELECT SYS AND NON-SYS FILES
    ORA    C    ; OR IN USER NUMBER
    LXI    D,NTFCB    ; PT TO FCB
    CALL    INITFCB    ; INIT THE FCB
    CALL    DIRFS    ; LOAD DIR, SELECT FILES, PACK, AND ALPHABETIZE
;
;  DETERMINE BEGINNING OF SCRATCH AREA (SCRATCH) AND SIZE IN PAGES (BCNT)
;
    PUSH    H    ; SAVE PTR AND COUNT
    PUSH    B
    LXI    D,ESIZE    ; SET PTR TO NEXT FREE BLOCK
FCTFRE:
    MOV    A,B    ; DONE?
    ORA    C
    JZ    FCTFR1
    DAD    D    ; PT TO NEXT
    DCX    B    ; COUNT DOWN
    JMP    FCTFRE
FCTFR1:
    INR    H    ; NEXT PAGE
    MVI    L,0
    SHLD    SCRATCH    ; SET PTR TO SCRATCH AREA
    XCHG        ; PTR IN DE
    LHLD    BDOSE+1    ; COMPUTE BLOCK BUFFER SIZE
    MOV    A,H    ; ADJUST FOR ZCPR2
    SUI    10
    SUB    D    ; A=SIZE IN BLOCKS
    STA    BCNT    ; SET BLOCK COUNT
    POP    B    ; RESTORE AND SAVE REGS
    POP    H
;
;  ALLOW USER TO INSPECT FILES
;
    PUSH    H
    PUSH    B
    CALL    ICHECK    ; CHECK FOR INSPECT OPTION AND INSPECT IF SET
    POP    B    ; RESTORE COUNT AND PTR
    POP    H

;
;  PERFORM FUNCTION; HL PTS TO FILE AND BC CONTAINS NUMBER OF FILES
;
FCTL:
    MOV    A,B        ; CHECK FOR COMPLETION (COUNT = 0)
    ORA    C
    JZ    FCTL1
    DCX    B        ; COUNT DOWN
    LXI    SP,STACK    ; RESET STACK
    PUSH    B        ; SAVE COUNT AND PTR
    PUSH    H
    CALL    FUNCTION    ; PERFORM FUNCTION
FCTLNXT:
    LXI    SP,STACK-4    ; RESTORE STACK
    POP    H        ; RESTORE PTR
    POP    B        ; RESTORE COUNT
    LXI    D,ESIZE        ; PT TO NEXT ENTRY
    DAD    D
    JMP    FCTL

;
;  CHECK FOR NEXT FILE SPEC
;
FCTL1:
    CALL    GETUD    ; RETURN TO BASE USER/DISK
    LHLD    NEXTCH    ; GET PTR
    MOV    A,M    ; GET DELIM
    CPI    ','    ; ANOTHER FILE?
    JNZ    DRETURN
    INX    H    ; PT TO CHAR AFTER COMMA
    JMP    DSPEC1    ; CONTINUE PROCESSING

;
;  **** EMERGENCY ABORT
;
ABORT:
    CALL    PRINT
    DB    CR,LF,'** PAGE Abort **',CR,LF,0
    CALL    GETUD    ; RETURN HOME AND FALL THRU TO DRETURN
;
;  **** FUNCTION COMPLETE -- CLEANUP AND EXIT
;    FILL THIS IN WITH CLEANUP CODE FOR EXIT
;
DRETURN:
    JMP    RETURN

;
;  **** INSPECT FILES -- THIS ROUTINE IS TO PERFORM A FILE INSPECTION
;    ON INPUT, HL PTS TO FIRST 16-BYTE ENTRY AND BC=NUMBER OF ENTRIES
;
ICHECK:
    mov    a,b    ;any files?
    ora    c
    rz
    push    h    ;save ptrs
    push    b
    lxi    d,esize    ;size of entry
ichk1:
    mvi    m,0    ;clear MSBytes
    dad    d    ;pt to next
    dcx    b    ;count down
    mov    a,b    ;done?
    ora    c
    jnz    ichk1
    pop    b    ;restore ptrs
    pop    h
    lda    inspect    ;inspect?
    ora    a    ;0=no
    rz
    call    print
    db    cr,lf,'PAGE File Inspect Mode',0
ichk2:
    call    print
    db    cr,lf,'Select ',0
    call    prfn    ;print file name
    call    print
    db    ' -- (Y/N/Q=Select Rest/S=Skip Rest/other=Y)? '
    db    0
    call    cin    ;get response
    call    caps    ;capitalize
    call    cout    ;echo
    cpi    'Q'    ;select rest?
    jz    ichkyr
    cpi    'S'    ;skip rest
    jz    ichknr
    cpi    'N'    ;no to this one?
    jnz    ichk3
    mvi    m,0ffh    ;set NO flag in file FCB
ichk3:
    dad    d    ;pt to next one
    dcx    b    ;count down
    mov    a,b    ;done?
    ora    c
    jnz    ichk2
    RET
;  Check Rest of Files as Selected
ichkyr:
    call    print
    db    cr,lf,'    Rest of Files Selected',0
    ret
;  Check Rest of Files as NOT Selected
ichknr:
    mvi    m,0ffh    ;set NO flag
    dad    d    ;pt to next
    dcx    b    ;count down
    mov    a,b    ;done?
    ora    c
    jnz    ichknr
    call    print
    db    cr,lf,'    Rest of Files NOT Selected',0
    ret
;
;  **** FUNCTION -- MAIN FUNCTION OF TEMPLATE
;    ON ENTRY, HL PTS TO NAME OF FILE (16 BYTES) AND USER IS LOGGED INTO
;        DIRECTORY CONTAINING INDICATED FILE
;
FUNCTION:
;
;  FILE PAGE Routine -- Page the File Whose Name is Pointed to by
;    HL; we are already logged into the correct directory
;
    mov    a,m    ;file selected?
    ora    a    ;0=yes
    rnz
    call    prinit    ;init print buffers
    call    fload    ;load buffer initially
    lhld    scratch    ;pt to first char in file
    shld    nxtln    ;set pointer to next line
fprloop:
    call    prline    ;print line of file
    jnz    fprloop    ;done if EOF
    call    page    ;advance to top of next page
    call    prfoot    ;print footer
    ret
;
;  Init Print Buffers and Print File Name
;
prinit:
    lxi    d,tfcb    ;set up FCB
    mvi    b,12    ;12 bytes
    call    moveb
    lxi    h,0    ;HL=0
    shld    pnum    ;set page number
    shld    lnum    ;set line number
    lda    ctpp    ;set line count
    dcr    a    ;1 less for first line
    sta    lcount
    call    print
    db    cr,lf,'PAGE File: ',0
    lxi    h,tfcb    ;print file name
    call    prfn
    call    crlf
    ret
;
;  FILE LOAD (FLOAD) Routine -- Initial Load of memory buffer
;
fload:
    lxi    d,tfcb    ;pt to file fcb
    call    initfcb    ;init file's fcb
    call    f$open    ;open file for input
    jz    fload1    ;open was OK
    call    print
    db    cr,lf,'File ',0
    xchg        ;HL pts to FCB
    call    prfn    ;print file name
    call    print
    db    ' NOT Found',0
    pop    d    ;clear return address
    ret        ;abort printout of this file
;
;  This is an entry point for further memory loads of the file
;
fload1:
    lda    bcnt    ;get number of blocks to load
    mov    c,a    ;... in C
    lhld    scratch    ;get address of first block to load into
    shld    nxtblk    ;set pointer to next block to load
fload2:
    call    rdblk    ;read a block (128 bytes)
    jnz    eof    ;eof encountered?
    call    rdblk    ;read another block (128 bytes)
    jnz    eof    ;eof encountered?
    dcr    c    ;count down
    jnz    fload2
    lhld    nxtblk    ;pt to next byte to load
    mvi    m,eold    ;mark end of load
    ret
eof:
    lxi    d,tfcb    ;close file
    call    f$close
    lhld    nxtblk    ;ensure ^Z
    mvi    m,ctrlz
    ret
rdblk:
    lxi    d,tfcb    ;pt to FCB
    call    f$read    ;read next block
    ora    a    ;error?
    rnz
    lhld    nxtblk    ;get ptr to next block
    xchg        ; as dest
    lxi    h,tbuff    ;ptr to DMA address
    mvi    b,128    ;copy 128 bytes
rdblk1:
    mov    a,m    ;get byte
    ani    7fh    ;mask out msb
    stax    d    ;put byte
    inx    h    ;pt to next
    inx    d
    dcr    b    ;count down
    jnz    rdblk1
    xchg        ;new nxtblock
    shld    nxtblk
    ret

;
;  Line Print Routine
;    Print Next Line with Optional Disk Load
;    Input Parameter is NXTLN, which is the address of the first char
; on the next line
;    Output Parameter is Zero Flag, with Z meaning done with print, NZ
; meaning more yet to print
;
prline:
    lhld    lnum    ;increment line number
    inx    h
    shld    lnum
    lhld    nxtln    ;pt to first char of next line
    mvi    c,0    ;init char count
    mov    a,m    ;get first char of line
    cpi    ctrlz    ;EOF?
    cnz    prlnum    ;print line number (optional)
prl1:
    mov    a,m    ;get char
    cpi    eold    ;end of load?
    jz    prload
    cpi    ctrlz    ;eof?
    jz    prexit
    inx    h    ;pt to next char
    cpi    ctrli    ;tab?
    jz    prtab
    cpi    cr    ;<CR>?
    jz    prcr
    cpi    ff    ;form feed?
    jz    prff
    cpi    lf    ;end of line?
    jz    prldn
    cpi    ctrlh    ;back space?
    jz    prbs
    cpi    ctrlg    ;ring bell?
    jz    prbell
    cpi    del    ;delete char?
    jz    prl1    ;skip it
    cpi    ' '    ;other control char?
    jc    prl1    ;skip if other control char
    call    prout    ;print char
    inr    c    ;increment char count
    call    eoltest    ;check to see if at end of line and newline if so
    jmp    prl1
;
;  End of Load Reached -- Load More of File from Disk
;
prload:
    push    b    ;save char count
    call    fload1    ;use load routine
    pop    b    ;get char count
    lhld    scratch    ;next byte is here
    jmp    prl1    ;continue processing
;
;  Tabulate
;
prtab:
    mvi    a,' '    ;space
    call    prout
    inr    c    ;new char
    call    eoltest    ;process EOL
    mov    a,c    ;done?
    ani    7
    jnz    prtab    ;continue tabulation
    jmp    prl1    ;continue processing
;
;  Exit with Zero Flag Set if Done
;
prexit:
    xra    a    ;set zero flag
    ret
;
;  Carriage Return -- Reset Character Count and Continue
;
prcr:
    call    prout    ;send CR to printer
    mvi    c,0    ;reset char count
    jmp    prl1    ;continue processing
;
;  Form Feed -- Advance to Top of Next Page
;
prff:
    call    page    ;page eject with heading
    mvi    c,0    ;reset char count
    jmp    prl1    ;continue processing
;
;  Line Feed -- End of Routine
;
prldn:
    call    prout    ;echo LF to printer
    shld    nxtln    ;set ptr to first char of next line
    mvi    a,0ffh    ;set not done
    ora    a    ;set flags
    ret
;
;  Backspace on Printer
;
prbs:
    mov    a,c    ;check for beginning of line
    ora    a
    jz    prl1    ;continue if at BOL
    mvi    a,ctrlh    ;backspace
    call    prout
    dcr    c    ;back up char position
    jmp    prl1    ;continue
;
;  Ring Bell on Printer
;
prbell:
    call    prout    ;ring the bell
    jmp    prl1    ;continue without advancing char position
;
;  Test for End of Line and Process if so
;
eoltest:
    lda    cwidth    ;get line width
    sui    4    ;4 chars less for continuation mark
    mov    b,a    ;result in B
    lda    lnumfl    ;line numbering (lines are 7 chars shorter if so)
    ora    a    ;0=no
    jz    eolt1
    mov    a,b    ;reduce by 7 for line numbers
    sui    7
    mov    b,a
eolt1:
    mov    a,b    ;get line width
    cmp    c    ;there?
    rnz        ;continue if not
    mov    a,m    ;get next char
    cpi    cr    ;new line next?
    rz        ;continue if so
    cpi    ctrlh    ;backspace next?
    rz        ;continue if so
    mvi    a,' '    ;print continuation chars
    call    prout
    mvi    a,'<'
    call    prout
    mvi    a,'<'
    call    prout
    mvi    a,cr    ;new line
    call    prout
    mvi    a,lf
    call    prout
    mvi    c,0    ;reset char position
    lda    skipfl    ;skipping?
    ora    a    ;0=no
    rnz
    lda    lnumfl    ;printing line numbers?
    ora    a    ;0=no
    rz
    call    print
    db    '     : ',0
    ret
;
;  Output a character to the console
;    A = Character
;
prout:
    mov    b,a    ;char in B
    call    cst    ;check for abort
    jnz    prout1
    call    ctrlin    ;get control input
prout1:
    lda    skipfl    ;skipping?
    ora    a    ;set flags (Z=no skip=print char)
    mov    a,b    ;restore char
    cz    ctrlout    ;send character to printer
    cpi    lf    ;special tests if it is a line feed
    rnz        ;done if non-LF char
    lda    lcount    ;decrement line counter
    dcr    a
    sta    lcount
    rnz
;
;  Paging Required
;    Skip to top of next page; reset LCOUNT (Lines Left on Page Count);
;    increment PNUM (Screen Number); test for skip stop; print header
;
prout0:
    lda    ctpp    ;get number of text lines per page
    sta    lcount    ;set as new line count
    push    h    ;save ptr
    lhld    pnum    ;increment page number
    inx    h
    shld    pnum
    lda    cspp    ;number of lines to skip
    call    lineskp    ;skip lines
    pop    h    ;restore ptr
    mov    a,m    ;check next character
    cpi    ctrlz    ;EOF?
    cnz    prfoot    ;print 1-line footer
    lda    skipfl    ;skipping?
    ora    a    ;0=no
    push    h
    cnz    skiptst    ;affects HL
    pop    h
    ret
;
;  Skip out rest of page
;    Form Feed Function
;
page:
    lda    lcount    ;get count of remaining lines
    call    lineskp    ;skip lines
    jmp    prout0    ;process top of new page
;
;  Skip out lines on page
;
lineskp:
    mov    b,a    ;line count in B
    ora    a    ;any?
    rz
    lda    skipfl    ;skipping?
    ora    a
    rnz
    lda    pagefl    ;paging?
    ora    a
    rz
lines1:
    mvi    a,cr    ;output new line to printer
    call    cout
    mvi    a,lf
    call    cout
    dcr    b    ;count down
    jnz    lines1
    ret
;
;  Control Input
;    CTRLIN -- Main Routine Entry Point; Implements Dynamic Commands,
;        including P, 0-9, ^S, ^X, and ^C
;    CTRLCS -- ^S Reentry Point; Implements all Dyanamic Commands except ^S
;
ctrlcs:
    call    cin    ;get input
    jmp    ctrlns
ctrlin:
    call    cin    ;get input
    cpi    ctrls    ;pause?
    jz    ctrlcs
ctrlns:
    call    caps    ;capitalize
    cpi    ctrlc    ;abort?
    jz    abort
    cpi    ctrlx    ;skip to next
    jz    fctlnxt
    cpi    'P'    ;page now?
    jz    ctrlip
    cpi    '0'    ;delay?
    rc
    cpi    '9'+1
    rnc
    sui    '0'    ;convert to binary
    sta    delay    ;set delay count
    ret
ctrlip:
    lda    pagefl    ;toggle paging
    cma
    sta    pagefl
    ret
;
;  Control Output
;
ctrlout:
    push    psw    ;save char
    call    cout    ;output char
    lda    delay    ;pause?
    ora    a    ;any delay?
    jz    ctrloz
    push    h    ;delay
    push    b
    mov    b,a    ;delay count
del1:
    lxi    h,500    ;delay constant
del2:
    xthl        ;long NOP
    xthl
    dcx    h    ;count down
    mov    a,h    ;done?
    ora    l
    jnz    del2
    dcr    b    ;count down
    jnz    del1
    pop    b    ;restore regs
    pop    h
ctrloz:
    pop    psw    ;restore A
    ret
;
;  Print Line Number (optional)
;
prlnum:
    lda    skipfl    ;skipping?
    ora    a    ;0=no
    rnz
    lda    lnumfl    ;get flag
    ora    a    ;0=don't number lines
    rz
    push    h    ;save ptr
    lhld    lnum    ;get line number
    call    phldc    ;print line number
    call    print    ;print separator
    db    ': ',0
    pop    h    ;restore ptr
    ret
;
;  Print 1-line footer
;
prfoot:
    lda    skipfl    ;skipping?
    ora    a    ;0=no
    rnz
    lda    pagefl    ;paging?
    ora    a
    rz
    push    h    ;save ptr
    call    prpnum    ;print page heading and number
    call    prdash    ;print dash
    lxi    h,tfcb    ;pt to file FCB
    call    prfn    ;print file name
    pop    h    ;restore ptr
    call    print
    db    ' -- Strike Any Key ',0
    call    ctrlin    ;get control response
    jmp    crlf    ;new line
;
;  Test for completion of skipping
;
skiptst:
    lhld    pnum    ;get page number
    inx    h    ;increment for test
    xchg        ;... in DE
    lhld    skipnum    ;get page to skip to
    mov    a,h    ;compare them
    cmp    d
    rnz
    mov    a,l
    cmp    e
    rnz
    xra    a    ;A=0 to stop skipping
    sta    skipfl    ;set flag
    ret
;
;  Print Page Number
;
prpnum:
    call    print    ;print header
    db    'Screen ',0
    lhld    pnum    ;print current page number
    call    phldc    ;print as decimal
    ret
;
;  Print Separator
;
prdash:
    call    print
    db    ' -- ',0
    ret
;
;  UTILITIES
;    SBLANK  -- SKIP BLANKS PTED TO BY HL UNTIL NON-BLANK ENCOUNTERED; HL
;    SNBLANK -- SKIP NON-BLANKS PTED TO BY HL UNTIL BLANK OR EOL; HL
;    PRFN    -- PRINT FILE NAME PTED TO BY HL; AFFECT NOTHING
;

;
;  SKIP UNTIL NON-BLANK
;
SBLANK:
    MOV    A,M    ; LOOK FOR BLANK
    INX    H    ; PT TO NEXT
    CPI    ' '    ; BLANK?
    JZ    SBLANK
    DCX    H    ; BACK UP
    RET

;
;  SKIP UNTIL BLANK OR EOL
;
SNBLANK:
    MOV    A,M    ; GET CHAR
    INX    H    ; PT TO NEXT
    CPI    ' '    ; BLANK?
    JZ    SNB1
    ORA    A    ; EOL?
    JNZ    SNBLANK
SNB1:
    DCX    H    ; BACK UP
    RET

;
;  PRINT FILE NAME PTED TO BY HL
;    OUTPUT TO CON:
;
PRFN:
    PUSH    H    ; SAVE REGS
    PUSH    B
    CALL    RETUD    ; GET CURRENT USER/DISK
    MOV    A,B    ; PRINT DISK
    ADI    'A'    ; LETTER
    CALL    COUT
    MOV    A,C    ; PRINT USER
    CALL    PADC
    CALL    PRINT
    DB    ': ',0
    INX    H    ; PT TO FILE NAME
    MVI    B,8    ; PRINT NAME
    CALL    PRNT
    MVI    A,'.'    ; DECIMAL
    CALL    COUT
    MVI    B,3    ; PRINT TYPE
    CALL    PRNT
    POP    B    ; GET REGS
    POP    H
    RET

;
;  PRINT CHARS PTED TO BY HL FOR B BYTES
;    OUTPUT TO CON:
;
PRNT:
    MOV    A,M    ; GET CHAR
    CALL    COUT
    INX    H    ; PT TO NEXT
    DCR    B    ; COUNT DOWN
    JNZ    PRNT
    RET

;
;  BUFFERS
;
DISK:
    DS    1    ; HOME DISK NUMBER
USER:
    DS    1    ; HOME USER NUMBER
CDISK:
    DS    1    ; CURRENT DISK NUMBER
CUSER:
    DS    1    ; CURRENT USER NUMBER
CMDLNE:
    DS    2    ; PTR TO COMMAND LINE STRING
NEXTCH:
    DS    2    ; PTR TO NEXT CHAR IN MULTIFILE COMMAND LINE
FILECNT:
    DS    2    ; COUNT OF NUMBER OF FILES RENAMED
SCRATCH:
    DS    2    ; ADDRESS OF FIRST BYTE OF SCRATCH AREA
BCNT:
    DS    1    ; NUMBER OF PAGES IN SCRATCH AREA
NTFCB:
    DS    36    ; FCB FOR NEW FILE
;
;  PAGE Buffers
;
tfcb:
    ds    36    ; FCB for current file
nxtblk:
    ds    2    ; pointer to next block to load
nxtln:
    ds    2    ; pointer to next line to read
lcount:
    ds    1    ; count of text lines left on page
;
;  Stack
;
    DS    100    ; STACK AREA
STACK:
    DS    2    ; OLD STACK PTR

    END