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ZCPR2
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WHEEL.MAC
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2000-06-30
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6KB
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283 lines
;
; PROGRAM: WHEEL
; VERSION: 1.1
; AUTHOR: RICHARD CONN
; DATE: 24 JAN 83
; PREVIOUS VERSIONS: 1.0 (14 Jan 83)
;
vers equ 11
;
; WHEEL is used to set and clear the WHEEL byte. It is invoked by
; one of the following forms:
;
; WHEEL or WHEEL // <-- Print Help
; WHEEL password SET <-- Set Wheel Byte
; WHEEL password <-- Set Wheel Byte
; WHEEL password RESET <-- Reset (Clear) Wheel Byte
; WHEEL /S or WHEEL /R <-- Set or Reset Wheel Byte
; (Type Password Later Sans Echo)
;
;
; CP/M Constants
;
cpm equ 0
bdose equ cpm+5
pass equ cpm+5dh ; 1st FCB is password
cmnd equ cpm+6dh ; 2nd FCB is command
tbuff equ cpm+80h
cr equ 0dh
lf equ 0ah
;
; SYSLIB Routines
;
ext print,caps,codend,inline
;
; This program is Copyright (c) 1982, 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.
;
;
; 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 000H ; EXTERNAL PATH?
MCREQD:
DB 000H ; MULTIPLE COMMAND LINE?
MXREQD:
DB 000H ; MAX USER/DISK?
UDREQD:
DB 000H ; ALLOW USER/DISK CHANGE?
PUREQD:
DB 0FFH ; PRIVILEGED USER?
CDREQD:
DB 000H ; CURRENT INDIC AND DMA?
NDREQD:
DB 000H ; NAMED DIRECTORIES?
Z2CLASS:
DB 8 ; CLASS 8
DB 'ZCPR2'
DS 10 ; RESERVED
;
; END OF SINSFORM -- STANDARD DEFAULT PARAMETER DATA
;
;******************************************************************
;
;
; Special Value
;
WHLADR:
DW 0 ; ADDRESS OF WHEEL BYTE
;
; Start of Program
;
start:
call print
db 'WHEEL Version '
db vers/10+'0','.',(vers mod 10)+'0',0
lda pass ; get password
cpi ' ' ; help?
jz help
cpi '/'
jnz start1
lda pass+1 ; get option
sta cmnd ; store command
cpi 'R' ; reset?
jz inpass
cpi 'S' ; Set?
jz inpass
help:
call print
db cr,lf,' WHEEL is used to Set and Reset (Clear) the Wheel'
db cr,lf,'Byte in order to enable (Wheel Byte is Set) or disable'
db cr,lf,'(Wheel Byte is Reset) certain commands within ZCPR2.'
db cr,lf
db cr,lf,'The forms of the WHEEL command are:'
db cr,lf,' WHEEL or WHEEL // <-- Print Help'
db cr,lf,' WHEEL password SET <-- Set Wheel Byte'
db cr,lf,' WHEEL password <-- Set Wheel Byte'
db cr,lf,' WHEEL password RESET <-- Reset (Clear) Wheel Byte'
db cr,lf,' WHEEL /S or WHEEL /R <-- Set or Reset Wheel Byte'
db cr,lf,' but allow user to type'
db ' in password'
db cr,lf,' without echo'
db cr,lf,0
ret
;
; Input Password without echo and then process it
;
inpass:
call print
db cr,lf,'Password? ',0
call codend ; pt to scratch area
xra a ; no echo
call inline ; get line from user
push h ; save ptr to first char
inp1:
mov a,m ; capitalize input
call caps
mov m,a
inx h ; pt to next
ora a ; done?
jnz inp1
pop h ; get ptr to first char
jmp start2
;
; Process Password
;
start1:
lxi h,pass ; pt to user password
start2:
lxi d,ppass ; pt to WHEEL password
mvi b,8 ; 8 chars max
passlp:
ldax d ; get WHEEL password
ora a ; done?
jz passtst
call caps ; capitalize
cmp m ; match?
jnz nopass
inx h ; pt to next
inx d
dcr b ; count down
jnz passlp
jmp passit
passtst:
mov a,m ; must be space or null
ora a ; null?
jz passit
cpi ' '
jnz nopass
passit:
lhld whladr ; get address of wheel byte
lda cmnd ; check command
cpi 'R' ; reset?
jz reset
mvi m,0ffh ; set wheel byte
call print
db cr,lf,'WHEEL Byte Set',0
ret
reset:
mvi m,0 ; reset wheel byte
call print
db cr,lf,'WHEEL Byte Reset',0
ret
nopass:
call print
db cr,lf,'Invalid Password',0
ret
end