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{IncludeFrom=sysglobals <p2c/sysglobals.h>}
{*VarStrings=1} {*ExportSymbol=}
module sysglobals;
export
type fsidctype = packed array[1..20] of char;
const
fsidc = fsidctype['Rev. 3.1 18-Jul-85'];
(*20 CHARS: VERSION,DATE,TIME OF FILE SYS*)
mminint = -32768; (*MINIMUM SHORT INTEGER VALUE*)
mmaxint = 32767; (*MAXIMUM SHORT INTEGER VALUE*)
maxunit = 50; (*MAXIMUM PHYSICAL UNIT NUMBER*)
passleng = 16; (*NUMBER OF CHARS IN A PASSWORD*)
vidleng = 16; (*NUMBER OF CHARS IN A VOLUME NAME*)
tidleng = 16; (*NUMBER OF CHARS IN A FILE TITLE*)
fidleng = 120; (*NUMBER OF CHARS IN FILE NAME*)
fblksize = 512; (*STANDARD FILE BUFFER LENGTH*)
maxsc=63; (*LARGEST SELECT CODE *)
minlevel=1; (*LOWEST INTERRUPT LEVEL*)
maxlevel=6; (*LARGEST MASKABLE INTERRUPT LEVEL*)
type
byte = 0..255;
shortint = mminint..mmaxint;
ipointer = ^integer;
charptr = ^char;
textpntr = ^text;
string80 = string[80];
string255 = string[255];
suffixtype = string[5];
string255ptr = ^string255;
unitnum = 0..maxunit;
vid = string[vidleng];
tid = string[tidleng];
fid = string[fidleng];
passtype = string[passleng];
filekind = (untypedfile, {directory entry}
badfile, {bad blocks}
codefile, {executable or linkable}
textfile, {UCSD format text with editor environment}
asciifile, {L.I.F. ASCII format text strings}
datafile, {file of <data type, e.g. char, integer,etc.>}
sysfile, {system (BOOT) file}
fkind7, fkind8, fkind9,
fkind10, fkind11, fkind12,
fkind13, fkind14, lastfkind); {reserved for future expansion}
(*FILE INFORMATION*)
window = packed array [0..maxint] of char;
windowp = ^window;
fibp = ^fib;
amrequesttype = (readbytes, writebytes, flush, writeeol, readtoeol, clearunit,
setcursor, getcursor, startread, startwrite, unitstatus, seekeof);
amtype = procedure (fp: fibp; request: amrequesttype;
anyvar buffer: window; bufsize, position: integer);
eotproc = procedure(fp: fibp);
fib = packed record
fwindow: windowp; (*BUFFER VARIABLE...F^ *)
flistptr: fibp; (* LIST OF OPEN FILES *)
{declaration and type information}
frecsize: integer; (* SIZE OF ONE LOGICAL RECORD *)
feft: shortint; (* EXTERNAL FILE TYPE *)
fkind: filekind; (* FILE KIND *)
fistextvar: boolean; (* FILE IS LINE FORMATTED *)
fbuffered: boolean; (* HAS 512 BYTE BLOCK BUFFER *)
fanonymous: boolean; (* FILE HAS NO NAME *)
fisnew: boolean; (* WAS CREATED THIS ASSOCIATION *)
freadable, fwriteable: boolean; (* FILE ACCESS RIGHTS *)
{state information}
freadmode, fbufvalid: boolean; (*F^ AND LOOKAHEAD STATES *)
feoln: boolean; (* F^ IS AN END OF LINE *)
feof: boolean; (* TRIED TO READ PAST END OF FILE *)
fmodified: boolean; (* FILE HAS CHANGED SIZE *)
fbufchanged: boolean; (* BUFFER NEEDS TO BE WRITTEN *)
{file size and position}
fpos: integer; (* FILE POINTER, CURRENT FILE POSITION *)
fleof: integer; (*LOGICAL END OF FILE, CURRENT FILE SIZE *)
fpeof: integer; (*PHYSICAL END OF FILE, MAXIMUM FILE SIZE *)
{buffering and low level formatting information}
flastpos: integer; (* FILE POSITION OF BUFFER *)
freptcnt: shortint; (* SPACE COMPRESSION COUNT *)
am: amtype; (*BUFFER METHOD MODULE *)
{file association info}
fstartaddress: integer; (*EXECUTION ADDRESS IN BOOT FILE *)
fvid: vid; (* VOLUME NAME *)
ffpw: passtype; (* FILE PASSWORD *)
ftid: tid; (* FILE NAME *)
pathid: integer; (* ADDITIONAL SYSTEM DEPENDENT INFORMATION *)
fanonctr: shortint; (* TEMP FILE IDENTIFIER *)
foptstring: string255ptr; (* OPTIONAL STRING PARAM *)
{byte block transfer information}
fileid: integer; (* START BYTE OF FILE, OR OTHER IDENTIFICATION *)
fb0,fb1, (* FOR FUTURE EXPANSION *)
fnosrmtemp, (*TRUE IF NO SRM TEMP FILE CREATED *)
fwaitonlock, (*TRUE IF SRM SHOULD WAIT FOR LOCK *)
fpurgeoldlink, (*TRUE IF OLD SRM LINK IS TO BE PURGED *)
foverwritten, (*TRUE IF OPENED WITH OVERWRITE *)
fsavepathid, (*TRUE IF PATHID NOT UNIQUE TO FILEID *)
flockable, (*TRUE IF FILE OPENED AS LOCKABLE *)
flocked, (*TRUE IF FILE IS LOCKED *)
fbusy : boolean; (*TRUE IF DRIVER IS ACTIVE *)
funit : unitnum; (*PHYSICAL UNIT NUMBER *)
feot : eotproc; (*CALLED WHEN TRANSFER COMPLETES *)
fxpos : integer; (* X POSITION FOR GOTOXY *)
fypos : integer; (* Y POSITION FOR GOTOXY *)
foldfileid : integer; (* FILEID FOR OLD SRM FILE ON REWRITE *)
{for future expansion}
fextra: array[0..2] of integer;
fextra2: shortint;
{large miscellaneous fields sometimes present}
case integer of
0: ( {minimal FIB ends here} );
1: (ftitle: fid); (* FILE NAME, EXCEPT VOLUME AND SIZE *)
2: (fbuffer: packed array [0..fblksize-1] of char);
end (*FIB*) ;
damrequesttype = (getvolumename, setvolumename, getvolumedate, setvolumedate,
changename, purgename,
openfile, createfile, overwritefile, closefile, purgefile,
stretchit, makedirectory, crunch, opendirectory, closedirectory, catalog,
stripname, setunitprefix, openvolume, duplicatelink, openparentdir,
catpasswords,setpasswords,lockfile,unlockfile,openunit);
damtype = procedure (anyvar f: fib; unum:unitnum; request: damrequesttype);
unitentry = {unitable entry definition}
packed record
dam: damtype; {directory access method}
tm: amtype; {byte block transfer method}
sc: byte; {select code}
ba: byte; {bus address}
du: byte; {disc unit}
dv: byte; {disc volume}
byteoffset: integer; {physical starting byte of volume}
devid: integer; {identifier (Amigo identify sequence)}
uvid: vid; {volume id}
dvrtemp: integer; {temp for driver use only; init to 0!}
dvrtemp2: shortint; {temp for driver use only; init to 0!}
letter: char; {device specifier letter}
offline, {unit absent or down flag}
uisinteractive, {user can edit input}
umediavalid, {medium not changed since last access}
uuppercase: boolean; {volume name must be uppercased}
uisfixed: boolean; {fixed/removeable media flag}
ureportchange: boolean; {driver mode: report/ignore media change}
pad: 0..1; { (bit not used yet) }
case uisblkd: boolean of {blocked volume flag}
true: (umaxbytes: integer) {volume size in bytes }
end; {unitentry}
unitabletype = array [unitnum] of unitentry; (*0 NOT USED*)
amtabletype = array[filekind] of amtype;
suftabletype = array[filekind] of suffixtype;
efttabletype = array[filekind] of shortint;
unitableptr = ^unitabletype;
amtableptrtype = ^amtabletype;
suftableptrtype = ^suftabletype;
efttableptrtype = ^efttabletype;
iorsltwd =
{ *note* the ioresult enumerations have been partitioned into two
mutually-exclusive groups: those beginning with 'z' are reserved
for the low-level drivers , and those beginning
with 'i' are reserved for the higher-level routines.}
(inoerror,zbadblock,ibadunit,zbadmode,ztimeout,
ilostunit,ilostfile,ibadtitle,inoroom,inounit,
inofile,idupfile,inotclosed,inotopen,ibadformat,
znosuchblk,znodevice,zinitfail,zprotected,
zstrangei,zbadhardware,zcatchall,zbaddma,
inotvalidsize,inotreadable,inotwriteable,inotdirect,
idirfull,istrovfl,ibadclose,ieof,
zuninitialized,znoblock,znotready,znomedium,
inodirectory,ibadfiletype,ibadvalue,icantstretch,
ibadrequest, inotlockable, ifilelocked, ifileunlocked,
idirnotempty, itoomanyopen, inoaccess, ibadpass, ifilenotdir,
inotondir, ineedtempdir, isrmcatchall, zmediumchanged,
{end marker} endioerrs);
proctype=procedure;
sctype=0..maxsc;
leveltype=minlevel..maxlevel;
pisrib = ^isrib;
isrproctype = procedure(isribptr: pisrib);
isrib = {isr information block}
packed record
intregaddr: charptr; {interrupt register address}
intregmask: byte; {interrupt register mask}
intregvalue: byte; {interrupt register target value after masking}
chainflag: boolean; {chaining flag}
proc: isrproctype; {isr}
link: pisrib; {pointer to next isrib in linked list}
end;
inttabletype = array [1..7] of pisrib;
action = procedure;
daterec = packed record
year : 0..100; (*100 IS TEMP DISK FLAG*)
day : 0..31; (*DAY OF MONTH*)
month : 0..12; (*0 ==> DATE NOT MEANINGFUL*)
end;
timerec = packed record
hour : 0..23;
minute : 0..59;
centisecond : 0..5999;
end;
datetimerec = packed record
date : daterec;
time : timerec;
end;
var
(*========= MANY OF THE FOLLOWING HAVE HARDCODED
ADDRESSES IN COMPILER AND ELSEWHERE =====*)
(*** ERROR RECOVERY ***)
sysescapecode: shortint;
openfileptr: anyptr;
recoverblock: anyptr;
(*** MEMORY MANAGEMENT ***)
heapmax: anyptr;
heapbase: anyptr;
(*** I/O DRIVERS ***)
sysioresult: integer;
hardwarestatus: integer;
locklevel: integer;
unitable: unitableptr;
interrupttable: inttabletype;
endisrhook: integer;
actionspending: integer;
(*** FILE SYSTEM ***)
gfiles: array[0..5] of textpntr;
{ [0] INPUT [3] (unused)
[1] OUTPUT [4] LISTING
[2] KEYBOARD [5] (unused) }
amtable: amtableptrtype; {pointer to access methods }
suffixtable: suftableptrtype; {pointer to list of suffixes}
efttable: efttableptrtype; {pointer to LIF file types}
sysunit: integer;
syvid,dkvid: vid; (*SYSUNIT VOLID & DEFAULT VOLID*)
syslibrary: fid;
(*** DEBUGGER HOOK ***)
debugger: procedure(p1, p2, p3: integer);
(*** CLEAR I/O HOOK ***)
cleariohook : procedure;
perminttable: inttabletype;
deferredaction: array[1..10] of action;
serialtextamhook: amtype; {access method for serial devices}
sysname[-574]: packed array[1..10] of char;
sysflag[-302]: packed record
reserved1, reserved2, nointhpib, crtconfigreg,
nokeyboard, highlightsxorbiggraphics, biggraphics,
alpha50: boolean;
end;
sysflag2[hex('FFFFFEDA')]: packed record {extend to 8 digits SFB 4/26/85}
pad7to1 : 0..127;
prompresent: boolean;
end;
endsysvars : shortint; {must be last thing
in SYSGLOBALS}
end.
|
