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Text File | 1986-10-27 | 32KB | 1,370 lines

title CCP+ v2.2 (c) by C.B Falconer (1986 Oct. 27) ; ; Z80 cpu required. Use CCPLUS 1.7 for 8080/8085 ; ; SEE CCP+.DOC for features, etc. Assembles as is with M80 or SLRMAC. ; For M80 Z80.LIB must be available and must rename source 'CCPLUS'. ; ; 2.2 86/10/27. Search suppression for DOS+ use. Added KILL command ; to abort submit/job operations. CCP+ knows how executed. cbf ; 2.1 86/10/11 Fixed so "-b:xyz name" executes name in b:xyz.lbr ; (with CCPXTEND mounted). Was aborting. Added non-wheel drive ; access checks. Commands suppressed under wheel now search for ; transients, and transient execution is non-suppressable. Now a ; du consisting of ":" alone specifies default. Fixed REN. cbf ; 2.0 86/10/2 Preliminary beta test release. Complete rewrite of 1.7 ; ccpver equ 22; UPDATE with each revision true equ -1 false equ not true debug equ false; true allows linking to existing code cr equ 0dh lf equ 0ah tab equ 09h eof equ 01ah ; ; User configurable values. See patch area at end. doupsft equ true; FALSE for NO command line upshift ; at initialization. subuser equ 0; User # for $$$.sub files maxuser equ 31; Max user when wheel set whluser equ 13; Max user when wheel not set dcols equ 5; columns for directory display ; END user options ; ; For M80 the following must be upper case. INCLUDE Z80.LIB ; ; CPM/DOS+ syscall values @cin equ 1 @cout equ 2 @instg equ 10 @csta equ 11 @rsdsk equ 13 @seldk equ 14 @fopen equ 15 @fclose equ 16 @srch1 equ 17 @srchn equ 18 @fpurg equ 19 @rdseq equ 20 @wtseq equ 21 @fnew equ 22 @frenm equ 23 @curdk equ 25 @stdma equ 26 @usrcd equ 32 ; ; CPM/DOS+ definitions reboot equ 0 iobyte equ reboot+3 defdu equ reboot+4; user/drive fields if debug; link separately extrn sysfnc else sysfnc equ reboot+5; connector to BDOS system endif defcbk equ reboot+05ch defdma equ reboot+080h tpa equ reboot+100h ; ; Macros tdig macro rlc rlc rlc rlc endm ; ; --------- Start ---------- ; ; Standard entry points. The "cold" entry is auto-patched to "both" ; at initial execution, for single sign-on and to cater to peculiar ; Osborne 1 peculiar cold boot mechanism. begin: jmp cold; execute command jmp warm; clear command line ; ; This MUST start at begin+6 for compatability. ibfsiz: db 126; size of input buffer. space for eol mark. ; 127 can cause obscure problems. ; set the following byte 0 for no cold start default command ibflen: db 0; patch command length for cold execution ; and install command below, 0 terminator ; ; For Osborne 1, do not modify. Result won't boot iobuff: dw 0,0,0,0,0,0,0; needed for OS1 autoboot. Why? db ' CCP+ v', ccpver/10 + '0', '.', ccpver MOD 10 + '0' db ' (C) 1986, C.B. Falconer,' db ' Tel. (203) 281-1438,' db ' 680 Hartford Tpk., Hamden, CT., USA' ds 136-($-begin),0; must have 2 spare bytes here. ; nofmsg: db 'No File',0 fulmsg: db 'No room',0 allmsg: db 'All (y/N)?',0 foldms: db 'File exists',0 dnmsg: db 'No ' upmsg: db 'UPSHIFT',0 ; ; Check for valid drive access. Carry if drive (a) invalid. ; entry (a) = 0 is default, always valid, 1, 2.. for A, B.. ; a,f,h,l drvchk: lhld whlmsk ; " " ; Entry here can check against mask hl (usually drvmsk) ; a,f,h,l drvckw: ora a rz dcr a ; " " ; move bit (a) of hl to carry. 0 is lsb, 15 is msb ; a,f,h,l bitmsk: sui 16 bitm1: dad h; left shift 16-n times inr a jrnz bitm1 ret ; ; Upshift (a) if lower case alpha. ; a,f upshft: cpi 'a' rc cpi 'z'+1 rnc ani 05fh ret ; ; Check (a) valid digit, carry if not ; f qnum: cpi '0' rc cpi '9'+1 cmc ret ; ; crlf to console ; a,f crlf: mvi a,cr call couta mvi a,lf ; " " ; console output from (a) ; a,f couta: push d mov e,a mvi a,@cout call bdos pop d ret ; ; Numeric 1..99 to console. Convert to Ascii, zero suppress ; a,f putnum: cpi 10 jrc pn2; 1 digit only push b mvi c,'0'-1 pn1: inr c adi -10 jrc pn1 adi 10 push psw mov a,c call couta pop psw pop b pn2: adi '0' jr couta ; ; Test for any console character ready. If so purge it and ; return nz flag. Else return z flag. Nulls absorbed ; a,f qbreak: mvi a,@csta call bdos rz mvi a,@cin jr bdos ; ; called from xcom and xtyp. If disk is default then search system ; disk on failure. z flag indicates failure ; a,f,d,e fopenf: xra a sta frecd lxi d,fcbdrv lda cmdmsk+1; (get high byte) ral jrc fopen; search disabled ldax d ora a jrnz fopen; not default, restrict search call fopen rnz; success on default drive inr a; i.e. disk a stax d; now try the system drive call fopen rnz; success stax d; restore default drive id for ccpxtd ret ; ; open file (de)^. z flag for failure ; a,f fopen: mvi a,@fopen ; " " ; execute functions, Z flag for 0ffh, increment return value ; a,f sfncr: call bdos inr a ret ; ; close file (de)^. Z flag for failure ; a,f fclose: mvi a,@fclose jr sfncr ; ; search next on (de)^. Z flag for failure, exit (a) incremented ; a,f srchn: mvi a,@srchn jr sfncr ; ; search for file fcbdrv. Z flag for failure, exit (a) incremented. ; a,f,d,e ffind: lxi d,fcbdrv mvi a,@srch1 jr sfncr ; ; purge file (de)^, z flag for failure ; a,f fpurge: mvi a,@fpurg jr sfncr ; ; read from file fcbdrv. z flag for success ; a,f,d,e freadf: lxi d,fcbdrv ; " " ; read from file (de)^. z flag for success ; a,f,d,e rdseq: mvi a,@rdseq jr bdos ; ; write to file (de)^. z flag for success ; a,f fwrite: mvi a,@wtseq jr bdos ; ; create file (de)^; z flag for success ; a,f create: mvi a,@fnew jr sfncr ; ; set dma access to defdma area ; a,f,d,e sdma80: lxi d,defdma ; " " ; set dma access to (de)^ ; a,f setdma: mvi a,@stdma jr bdos ; ; Find current logged disk qdisk: mvi a,@curdk jr bdos ; ; Set user to absolute value in fcbusr and select on BDOS. ; Do not modify or select drive. Leave drv/usr in bc ; Update fcbusr to absolute value ; a,f,b,c,e setusr: lbcd fcbusr; c := user, b := drive mov a,c ora a cm quser; default, get current user mov c,a; now an absolute value sbcd fcbusr ; " " ; set user to a ; a,f,e susera: mov e,a jr suser ; ; find current user code ; a,f,e quser: mvi e,0ffh ; " " ; set user (e) ; a,f suser: mvi a,@usrcd jr bdos ; ; reset disk system ; a,f rsdisk: mvi a,@rsdsk ; " " ; execute bdos call, return (a), set flags. Preserve other registers ; This is the sole connection to the outside world. ; a,f bdos: push h push d push b pushix mov c,a call sysfnc ora a; set flags on return value popix pop b pop d pop h ret ; ; Get a line from $$$.SUB file, and reduce the file size. ; If anything fails, purge $$$.SUB and reset subflg ; Line is placed in <ibflen,iobuff). 1st byte is length ; a,f,d,e,h,l getsub: lda subusr call susera lxi d,subfcb; Jam the user call fopen jrz killsub; not found push d lda subrc dcr a sta subrcd lxi d,ibflen call setdma pop d call rdseq; load the record jrnz killsub; read failed sta ibflen+127; ensure eol marked lxi h,subs2 mov m,a; zero, mark modified for close inx h dcr m; reduce file size (ok, read worked) call fclose jrz killsub; failure call qbreak jrz preset; no break (else kill the submit job) ; " " ; kill any existing $$$.sub file, ; reset subflg, and default drv/usr/dma ; a,f,d,e killsub: lda subusr call susera lxi d,subfcb call fpurge xra a sta subflg ; " " ; Set default DMA/drive/user (in defdu) preset: call sdma80; restore default dma setting ; " " ; select the default drive/user (in defdu) ; a,f,e setdud: lda defdu push psw tdig ani 0fh call susera pop psw ; " " ; select drive (a). DOS handles redundancies. ; a,f,e seldka: ani 0fh mov e,a push h lhld drvmsk call bitmsk; validate selection, 0..15 here pop h jc badcmd; invalid on this system mvi a,@seldk jr bdos ; ; Get command, either from subfile (preferred) or console. ; This line is NOT upshifted. ; a,f,d,e,h,l getcmd: lda subflg ora a cnz getsub; Get from sub file if possible lda defdu push psw ani 0fh adi 'A' call couta pop psw tdig ani 0fh cnz putnum mvi a,'>' call couta; finish the prompt lda subflg ora a lxi h,iobuff jnz tstr; a subfile line loaded, echo & exit ; " " ; Input line from console. Add line end mark. Return de^ to ibflen ; a,f,d,e,h,l getln: lxi d,ibfsiz mvi a,@instg call bdos; else read from console & exit inx d; to ibflen ldax d mov l,a xra a mov h,a dad d; point to line end inx h mov m,a; and mark it ret ; ; Parse the next field from the command line (IX^) into fcbdrv. Any ; drive/user specifications are recorded in fcbdrv and fcbusr ; (which default to 0 and -1 respectively). name and type are parsed ; into fname and ftype, blank padded, with any '*'s expanded into ; '?'s, and the fields are blank padded. At exit IX points to the ; field terminating delimiter char and lastwd points to the 1st char. ; a contains a count of '?' characters in fname & ftype fields, with ; flags set on it. Illegal chars. cause abort. ; a,f,b,c,d,e,h,l,ix parse: xra a ; " " ; Entry to parse 2nd drive spec. for xcom, when a = 010h parsef: lxi h,fcbusr call index; select fcb or alternate fcb call skipbk; skip any leading blanks sixd lastwd; save marker for errors call getdu; c := user, b := drv mov m,c; set fcbusr inx h mov m,b; set fcbdrv, set up for ldfld call lastch cpi ':' cz nextch; Absorb any du terminating ':' mvi b,8 push h call ldfld; fill the name field call lastch cpi '.' cz nextch; Absorb any name terminating '.' mvi b,3; (else terminator blank fills) call ldfld; fill the type field mvi b,3 parse1: inx h mvi m,0 djnz parse1; zero ex, s2, s1 fields lxi b,11 shl 8; b := 11, c := 0 pop h mvi a,'?' parse2: inx h cmp m jrnz parse3 inr c parse3: djnz parse2; count the '?'s in fname/ftype mov a,c ora a; z flag for no wild cards ret ; ; load up to (b) chars from (ix)^ up to (hl)^ up. ; skip to delimiter. Implement any wild cards on "*" ; blank fill if less than (b) chars available. ; Upshift any lower case characters. ; a,f,b,h,l,ix ldfld: call lastch; on (ix)^ and load it jrz ldfld4; delimiter inx h cpi '*' jrnz ldfld1 mvi m,'?'; expand '*' jr ldfld2; dont skip past it ldfld1: call upshft; upshift any lower case mov m,a call nextch ldfld2: djnz ldfld call lastch; on (de)^ and load it rz; a delimiter ldfld3: call nextch; else skip to a delimiter rz jr ldfld3 ldfld4: inx h mvi m,' '; blank fill djnz ldfld4 ret ; ; getdu returns any "du" spec. in b and c, with c = user, b = drv ; The default user is signified by a -1 value, default drive by 0 ; At entry, IX points to the start of the field to be parsed. At ; exit, either IX is unchanged (no du found), or points to ':' ; a,f,b,c,d,e,ix getdu: lxi b,0ffh; set defaults pushix pop d; pre-scan for valid du field ldax d call upshft; 2.1 - No ':' abort here call qnum jrnc getdu1; 1st char digit, no d cpi '@' rc; < '@', no du spec cpi 'P'+1 rnc; > P, no du spec inx d ldax d cpi ':' jrz getdu2; d spec only call qnum rc; no 'du' spec getdu1: inx d ldax d cpi ':' jrz getdu2; du spec found call qnum rc; no du spec inx d ldax d cpi ':' rnz; not terminal ':', no du spec ; " " ; prescan found a valid du format, now load it getdu2: call lastch call qnum jrnc getdu3; digit, no d portion call upshft sui '@' mov b,a; save d portion call nextch getdu3: cpi ':' rz; no 'u' portion ani 0fh mov c,a call nextch rz; ':', 1 digit only call dstep; incorporate call nextch; and advance to the (known) ':' lda maxusr cmp c jrc badcmd; User # too large ret ; ; Decimal input step. Carry for overflow. c is accumulator, a digit ; a,f,c,d dstep: ani 0fh mov d,a mov a,c cpi 26 cmc rc; overflow add a add a add c; 5* add a; 10* add d mov c,a; result ret; cy for overflow ; ; Get next character from line. Z flag for a delimiter, ; and abort if the character is illegal. Do not advance past eoln. ; Return char in a and leave IX pointing to it. cy for eoln ; a,f,ix nextch: ldx a,+0 ora a jrz lastch; don't advance past eol inxix ; " " ; Return last character, as above. Abort if invalid, cy for eoln ; a,f lastch: ldx a,+0 ora a stc rz; null is a delimiter cpi '='; and all these rz cpi '_' rz cpi '.' rz cpi ':' rz cpi ';' rz cpi '<' rz cpi '>'; Redirection chars rz cpi ','; Operand separator rz cpi '|'; Piping separator rz; ; " " ; Check white space, abort on illegal chars. z flag for white qwhite: cpi tab rz; white space is a delimiter cpi ' ' jrc badcmd; abort on illegals ret ; ; skip blanks and tabs in input line. Abort on illegal chars. ; return the 1st non-blank char. found. ; a,f,ix skipbk: call lastch rc; eoln skip1: call qwhite rnz; not white space ; " " ; Effectively "call nextch ! call skipbk" next: call nextch jrnc skip1 ret; eoln ; ; Parse a filename, abort if wild cards specified pfwild: call parse rz ; " " ; Badcmd is a command aborter. It shows the portion of the ; current line from lastwd^ thru ix, with a '?', kills any ; submit job in progress, and returns to the command loop. badcmd: call crlf lhld lastwd pushix pop d inx d mov a,e sub l mov b,a; char count for the field badcd1: mov a,m call couta inx h djnz badcd1; display the field mvi a,'?' call couta call killsub jr cmdone; go mark line empty ; ; **************************** ; The 'cold' entry should be at the magic 035Ch from begin ; to function with the peculiar Osborne 1 bootstrap loader. spare equ 035ch - ($-begin); available for patching if spare AND 08000h; i.e. negative +++ Code entry point wrong for Osborne 1 +++ else if spare NE 0 ds spare,0; null fill it endif endif ; ; ------- Outer Block -------- ; ; cold entry and sign-on. This is only used on initial entry, and is ; automatically patched out. If "cold" and "both" are not on the ; same page the relocation mechanism in RELOCCP will have problems. cold: jmp signon ; ; at entry (c) specifies default user/drive warm: xra a sta ibflen; kill prestored command ; " " ; Initialization. Entry here executes pre-stored command. c = usr/drv both: lxi sp,stktop lxi h,both; Automatic no sign-on patch. shld begin+1; also allows for Osborne 1 peculiarity xra a sta defdu; Until input (c) found valid call rsdisk; true if any '$*.*' file exists sta subflg mov a,c call dvalid; So defdu is A0: if invalid ; " " ; Main loop of the command processor. cmdlp: lxi sp,stktop; in case aborted call preset; Set default drv/user/dma call crlf lda ibflen ora a cz getcmd; No prestored, get new lda subflg; (sub breaks checked before and ora a; after echo, to ease operation) cnz qbreak; If console break on sub job jrz cmdlp1 call killsub; then abort sub in progress jr cmdone cmdlp1: lxi h,iobuff; init cursor to buffer start shld lastwd push h popix mov a,m cpi '*' jrz cmdone; initial '*' is also a comment for now sui ';' jrz cmdone; an initial ';' marks a comment line inr a; i.e. cpi ':' jrz cmdone; and ':' is a label for submit, ignore lda ibflen ora a cnz parse; next item into fcbdrv lda ibflen ora a cnz exec; execute the non-null command ; " " ; Exit point from commands cmdone: xra a; badcmd re-enters here sta ibflen jr cmdlp; Until a .COM file reboots ; ; hl := hl + a ; a,f,h,l index: add l mov l,a rnc inr h ret ; ; ------- The rest is execution features ------- ; ; The abilities of CCP+ can be modified fairly freely in the following ; code, without affecting the main parsing and submit execution. ; ; ----------------------------------------------- ; ; Check wheel permission for command # (a). At entry, ; a = 0 1 2 3 4 5 6 7 8 9 (= maxcmd+1) ; for login, dir, era, type, save, ren, caps, go, kill, xcom ; Values 10, 11, 12 for du check on login, dir, xcom respectively ; Returns carry for controlled command ; a,f,h,l whlchk: lhld @wheel mov a,m ora a rnz; wheel set lhld cmdmsk jmp bitmsk; put controlling bit in carry ; ; Login to drive/user specified by fcbusr, fcbdrv. ; a,f,b,c,e login: call skipbk jrnc cmdbad; more in line mvi a,maxcmd+2; for logins call chkdu; check validity while defaults marked mov a,c; chkdu set c := user, b := drv inr a ora b rz; drv/user default, null command call setusr; update to abs usr, call bdos mov a,c tdig ani 0f0h mov c,a mov a,b dcr a jp login1; not default drive lda defdu login1: ani 0fh ora c mov c,a; new defdu value, if valid ; " " ; validate drive selection before defdu update ; a,f,e dvalid: call seldka; so BDOS aborts if invalid mov a,c sta defdu; outer block does actual selection ret ; ; Exec receives the initial command line field parsed into fcbdrv, ; and is responsible for whatever is done with it. IX has been advanced ; to the delimiter past this first field. exec: lda ftype sui ' ' sta flag; if good, a default 0 jrnz cmdbad; No type allowed on initial field lda fname sui ' ' jrz login; A login command only lbcd fcbusr; Something other than a login command inr c mov a,c ora b mvi a,maxcmd cz lookup; No drv nor user spec, check built-ins lxi h,xfrtbl; (otherwise a file is specified) add a call index mov a,m inx h mov h,m mov l,a pchl; transfer via hl, returns to main ; ; Check validity of du under wheel reset conditions ; Abort to badcmd if illegal du. Returns b := drv, c := user ; Used for login, dir, and execution of transient commands, ; for which a = 10, 11 or 12 on entry respectively. ; a,f,b,c,h,l chkdu: lbcd fcbusr call whlchk; Wheel for command access? rnc; not controlled ; " " ; Validate against system values, abort if illegal inr c; so default is 0 lda whlusr; max ALLOWED inr a cmp c dcr c; restore c mov a,b cnc drvchk; if u ok check drive rnc; drive ok ; " " ; linkage to badcmd cmdbad: jmp badcmd ; ; search for valid command. Checks (fname) against internal list ; Returns a := index of command, maxcmd if not found (i.e. xcom) ; A suppressed command (via wheel/cmdmsk) returns maxcmd ; a,f,b,c,d,e,h,l lookup: lxi h,cmdtbl mvi c,0 jr look4; to loop entry look1: inx h djnz look1; skip over command table to next look2: inr c; advance index, test next entry mov a,c cpi maxcmd rnc; not in command table - exit look4: lxi d,fname mvi b,4; length of command strings look5: ldax d cmp m jrnz look1; not this one inx d inx h djnz look5; more chars to check ldax d cpi ' ' jrnz look2; Not terminated, not command mov a,c; found inr a; because 0 describes login call whlchk; is command suppressed? mov a,c rnc mvi a,maxcmd; yes, look for transient ret; found ; ; Set drv/user from fcbusr/fcbdrv. Expected to be restored. ; This is used only by the built-in and transient commands. ; Revise fcbusr/drv to specify absolute values. ; a,f,b,c,e setdu: call setusr; b := drv; c := usr mov a,b dcr a; put in range 0..15 jp setdu1; not default lda defdu; else get default setting setdu1: ani 0fh mov b,a; now drv/user are absolute values call seldka; aborts on invalid inr b; non-default, defeat any paths sbcd fcbusr; update fcb ret ; ; DIR command ; a,f,b,c,d,e,h,l,ix xdir: call skipbk xra a sta flag call parse call skipbk; so ix^ is at any options (O, S) jrc xdir3; end of line, no options call upshft cpi 'S'; system also jrz xdir1 cpi 'O'; only system jrnz xdir2; go check separator xdir1: sta flag cz nextch; position past any flag found call skipbk jrc xdir3; eol, no more xdir2: cpi ';' jrnz cmdbad; should have line end now xdir3: call nextch; absorb separator mvi a,maxcmd+3 call chkdu call setdu; now bc is abs drv/usr lxi h,fname mov a,m cpi ' ' jrnz dir; something specified mvi b,11; set *.* default xdir4: mvi m,'?'; with 11 "?"s inx h djnz xdir4 ; " " ; Parameters set up. List all matching entries dir: call ffind; return (a) := dir ptr + 1 jrz dirx mvi e,1; so first item causes new line dir1: dcr a; regain dir block pointer rrc rrc rrc ani 060h; mov c,a; form dir entry pointer call qlist jrc dir9; suppress this entry dcr e jrnz dir2; not new line needed lda cols mov e,a call crlf call qdisk adi 'A' call couta lda fcbusr ora a cnz putnum; show user if non-zero jr dir3 dir2: mvi a,' ' call couta dir3: mvi a,':' call couta mvi b,1; point to 1st char. in fname dir4: mvi a,' ' call couta dir5: mov a,b call idxac ani 07fh; remove any attribute bit call couta inr b; count position in name mov a,b cpi 9 jrz dir4; after fn, insert blank cpi 12 jrc dir5; not done, continue dir9: call qbreak; check for interruption rnz; user break call srchn jrnz dir1; with (a) := dir entry id dirx: call skipbk rc; end of command line, EXIT call crlf call setdud; restore defaults and jmp xdir; repeat for next field ; ; Check whether entry should be listed. defdma holds the ; directory field, c holds the field index, and flags any ; command input flag (0 if none, <O)nly system, <S>ystem ; Set carry if listing to be suppressed ; a,f,b,h,l qlist: mvi a,10 call idxac mov b,a; get system bit lda flag ora a jrnz qlist1; a flag mov a,b ral ret; with carry for system file qlist1: cpi 'S' rz; (S)ystem also, list this one mov a,b; must be (O)nly system cma ral ret; carry for non-system ; ; load (a+c)th char from defdma array ; a,f,h,l idxac: lxi h,defdma add c call index mov a,m ret ; ; TYPE command execution xtype: call pfwild; aborts if wild cards call setusr; but not drive, allow paths call fopenf jrz getn6; badcmd call crlf mvi b,128 xtype1: mov a,b cpi 128 jrc xtype2; disk read not needed call freadf rnz; eof mov b,a; a zero xtype2: inr b lxi h,defdma call index mov a,m cpi eof rz call couta call qbreak jrz xtype1; no interruption ret ; ; Get number from command line. ; Optional final "+" which sets 'flag' getnum: call pfwild; forbids wild cards lda fcbdrv ora a jrnz getn6; badcmd; starts with "d:" lxi h,fname lxi b,11 shl 8; c := 0, b := 11 getn1: mov a,m cpi ' ' jrz getn5; done cpi '+' jrz getn4; done, with + flag inx h call qnum cnc dstep; incorporate jrc getn6; badcmd overflow djnz getn1 getn3: mov a,c ret getn4: sta flag; i.e. "+" terminator getn5: inx h dcr b jrz getn3 mov a,m; test for excess garbage cpi ' ' jrz getn5 getn6: jmp badcmd ; ; SAVE command execution xsave: call getnum push psw call pfwild; aborts if wildcards call setdu; no paths, absolute drive lxi d,fname ldax d dcx d; to fcbdrv cpi ' ' jrz getn6; badcmd; no name specified call fpurge call create jrz xsave3; fullup xra a sta frecd pop psw mov l,a mvi h,0 dad h; convert pages to records lxi d,tpa lda flag ora a jrz xsave1 inx h; extra record to save xsave1: mov a,h ora l jrz xsave2 dcx h push h lxi h,128; advance to next record dad d push h; save next, d is present call setdma lxi d,fcbdrv call fwrite pop d; get back next pointer pop h; and record counter jrz xsave1; write succeeded jr fullup; write failure xsave2: lxi d,fcbdrv; done call fclose rnz; close succeeded push h; so we can arrive with xsave3: pop h; junk on the stack ; " " ; NO ROOM message and return fullup: lxi h,fulmsg jr xcaps1; tstrc ; ; CAPS command execution xcaps: lxi h,lcuc mov a,m cma mov m,a ora a lxi h,dnmsg jrz xcaps1 lxi h,upmsg xcaps1: jr tstrc; exit with message ; ; ERA command execution xera: call parse cpi 11 jrnz xera1; not *.* specification lxi h,allmsg call tstrc call getln xchg; hl points to ibflen dcr m rnz; not 1 char reply. jr byte saver inx h mov a,m ani 05fh; upshift, only interested in 'Y' cpi 'Y' rnz; not confirmed xera1: call setdu lxi d,fcbdrv call fpurge rnz; ok ; " " ; crlf,"NO FILE" message ; a,f,h,l nofile: lxi h,nofmsg ; " " ; crlf, then tstr ; a,f,h,l tstrc: call crlf ; " " ; string (hl) to console until 0 byte ; a,f,h,l tstr: mov a,m ora a rz inx h call couta jr tstr ; ; REN command execution xren: call pfwild; aborts if wild cards call setdu push b call ffind jrnz xren2; new name pre-exists lxi h,fcbdrv lxi d,filedn lxi b,16 ldir call skipbk cpi '=' jrz xren1 cpi '_' jrnz xren3; badcmd; invalid assignment operator. xren1: call nextch call pfwild; aborts on wild card call skipbk jrnc xren3; badcmd; extra garbage on line lhld fcbusr mov a,l inr a ora h jrnz xren3; badcmd; 2nd spec has a d/u pop h; du from 1st spec, absolute shld fcbusr; make them match call setdu call ffind; (sets de := fcbdrv) jrz nofile; cant find file to rename mvi a,@frenm jmp bdos; rename and EXIT xren2: pop psw lxi h,foldms jr tstrc; and EXIT with message xren3: jmp badcmd; LINKAGE ; ; COM/CCPXTEND.SYS file not found. (flag specifies which). ; Recycle the loader to load CCPXTEND or abort. ; This transient receives the complete command line, and can control ; any access rights, search libraries, execute interpreters, etc. ccpxtd: lda fcbdrv; no ccp extension when disk specified lxi h,flag; nor if already tried ora m jrnz xren3; badcmd dcr a mov m,a; set flag to prevent re-execution etc. lxi b,13; user, drive, name, type lxi d,fcbusr; Now try for ccp extension lxi h,xtndf jr xcom1; load extension and execute ; ; anything other than built-ins. look for a com file first, ; If this fails, pass the complete command line to CCPXTEND.SYS xcom: mvi a,maxcmd+4; for execution call chkdu; allows access restriction lxi h,com lxi d,ftype lxi b,3 xcom1: ldir; set file type to ".COM" call setusr; leave drive default, for paths call fopenf jrz ccpxtd; not found, exit lxi h,tpa-128 xcom2: lxi d,128; advance store ptr. dad d lxi d,begin mov a,l sub e mov a,h sbb d jnc fullup; prevent overwriting ccp on load xchg call setdma xchg call freadf; load the COM file jrz xcom2; not eof yet ; " " ; Execute loaded program after parsing command tail into page 0. xgo: call parse; 1st passed fcb call next; past closing delimiter. nextch/skipbk mvi a,010h call parsef; 2nd passed fcb xra a sta frecd sta frecnt lxi d,defcbk lxi h,fcbdrv lxi b,33; set default fcbs for execution ldir lxi h,iobuff lda flag ora a jrnz xgo2; keep everything on CCPXTEND xgo1: mov a,m ora a jrz xgo2 cpi ' ' jrz xgo2; skip the command name inx h jr xgo1 xgo2: mvi b,0 lxi d,defdma+1 xgo3: lda lcuc ora a mov a,m; set the passed command line cnz upshft; upshifting in effect stax d ora a jrz xgo4 inr b; count chars passed inx h inx d jr xgo3 xgo4: mov a,b sta defdma; set cmd line lgh for execution call crlf call preset; preset drive/user/dma jmp tpa; EXECUTE. Return to cmdlp on TOS ; xfrtbl: dw xdir, xera dw xtype, xsave dw xren, xcaps dw xgo, killsub dw xcom; xcom must be last entry maxcmd equ ($-xfrtbl)/2-1 ; ; Resident commands cmdtbl: db 'DIR ' db 'ERA ' db 'TYPE' db 'SAVE' db 'REN ' db 'CAPS' db 'GO ' db 'KILL' ; ; Check overall size if ($-begin) GT 1896 +++ CCP+ too large +++ else; enough room ; ; This space is re-used as execution time stack space. ; ; cold entry and sign-on. This is only used on initial entry. ; If "cold" and "both" are not on the same page the relocation ; mechanism in RELOCCP will have problems. signon: lxi sp,stktop lxi h,vermsg call tstrc jmp both ; ; Do not lengthen this message, else signon stack use clobbers it. vermsg: db 'CCP+ Ver. ' db ccpver/10 + '0','.',ccpver MOD 10 + '0' db 0 ds 1944-($-begin),0; working stack space available stktop: ds 0 endif; Too large check ; ; Data area. Starts at 0798h (from begin) ; ; SUBMIT control block. (34 bytes) subusr: db subuser subfcb: db 1,'$$$ SUB'; drv A, user 0 subex: db 0 subs1: db 0 subs2: db 0 subrc: ds 1,0 subdn: ds 16,0 subrcd: ds 1,0 subflg: ds 1,0; zero prevents sub file searches ; ; NOTE: the ",0" in ds statements ensures the areas are 0 filled ; ; File control block and receiver of parse fields (34 bytes) fcbusr: ds 1,0 fcbdrv: ds 1,0 fname: ds 8,0 ftype: ds 3,0 ds 3,0 frecnt: ds 1,0 filedn: ds 16,0; map or altfcb image frecd: ds 1,0 ; ; Parsing (3 bytes) lastwd: ds 2,0; start of current word in iobuff flag: ds 1,0; Command options. Multiple uses ; ; The rest can be re-configured. Placed at the end so location ; will not change with revisions. 16 bytes for this group com: db 'COM'; file type for transients ; ; The following file is loaded, passed the complete command line as ; entered by the user, and executed whenever a transient command is ; not found. Distributed CCPXTEND.SYS checks user 0, then looks in ; COMMAND.LBR on default and A drives, current user and user 0, and ; if that fails attempts to execute RUNPCD Pascal interpreter. You ; are perfectly free to install whatever CCPXTEND file you prefer. ; By installing different ones on various drv/user areas you can ; alter the system characteristics dependent on login area. If you ; are using normal CPM2.2 installation of the CPMFIX patch will make ; files on user area 0 with the SYSTEM attribute visible everywhere, ; and thus a single CCPXTEND.SYS can serve all areas by default. ; DOS+ requires no such patch, and implements paths. xtndf: db 0,0,'CCPXTENDSYS'; ccp extension usr/drv/filename ; ; Configuration constants for customization. Patchable. ; These ALWAYS appear in the last 16 bytes of the CCP area. cols: db dcols; columns to use for directory lcuc: db doupsft; zero to prevent command line upshift ; CAPS command modifies at run time. maxusr: db maxuser; Limit for parsing. Login max = 15 whlusr: db whluser; Highest user allowed when @wheel^ = 0 @wheel: dw reboot + 0; Location of wheel byte. +0 = none. ; (reboot always holds 0c3h=jmp) ; ; This mask specifies which commands are wheel controlled. ; bit (lsb) 0 1 2 3 4 5 6 7 8 9 ; for login, dir, era, type, save, ren, caps, go, kill, trans ; AND ; bit 10 11 12 cause du checks (wheel off) on ; for login dir transients (i.e. running .COM files) ; AND ; bit 15 (msb) disables A: search for transients & type command. This ; is normally disabled for DOS+, since DOS+ provides the search. ; ; (The ordering is dependent on the command table) ; running transients cannot be disabled, bit 9 is ignored ; Set to enable search for .COM files for CPM use. cmdmsk: dw 0; (use 8000h for DOS+) Mask for wheel controlled cmds ; ; These masks specify drives that may NOT be accessed. The lsb (of ; the word, weight 1) specifies A:, the msb (bit 15, weight 8000h) ; specifies P:. DRVMSK can prevent logins causing BDOS SELECT errors ; by specifying all drives not physically present in the system. ; WHLMSK is used for security purposes. ; CAUTION: do not disable drive A on most systems drvmsk: dw 0; Mask for invalid drives, wheel set whlmsk: dw 0; Mask for bad drives when @wheel^ = 0 db 0,0,0,0; Spares for future use ; (last word is available for ccitcrc) ; ; Check for relocator problem if ((both-begin) SHR 8) NE ((cold-begin) SHR 8) +++ Relocator problems, cold/warm/both pages +++ endif; relocation problem ; end äⁿ