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~PPENDIX
I
0001
0002
0004
0008
0010
0020
·0040
0080
0004
0008
0010
0080
0000
0003
0006
0009
OOOC
. 0000
0001
0003
0005
0006
0008
oooa
0000
EBOO
EB22
E853
E85A
E869
E86D
E86F
E872
E875.
E87B
E87B
E87E
EB81
E884
*
C D B D D F
*
A DD$FMC
EQU
A DD$LOG EGU
A DDsCNS EGU
A
DD$RWD
EGU
A DDSOCF EGU
A
DDSINP EGU
A
DOS
OUT
EGU
A OO$RES EGU
*
.. COB V 0 T
A VO$BIN
EGU
A VD$GDB
EGU
A VD$SDA EGU
A
VOSNFF EGU
*
-*DEVICE
*
A
DVSON
EGU
A
DV$OFF EGU
A OV$INT
EGU
A DV$TRM EGU
A
DV$ID
EGU
*
.. DIS K
*
A CURDRV
EGU
A STRSCT
EGU
A NUMSCT
EGU
A LSCTLN EGU
A CURADR
EGU
A FDSTAT
EGU
A SCTCNT EGU
A SIDES
EGU
*
*
E
ROM
*
A OSLOAD EGU
A FDINIT EGU
A CHKERR EGU
A PRNTER EGU
A READSC EGU
A READPS EGU
A RDCRC
EGU
A
RWTEST EGU
A RESTOR
EGU
A SEEK
EGU
A WRTEST EGU
A WRDDAM EGU
A WRVERF EGU
A WRITSC EGU
*
MDOS
E~uate
File Listing
BIT
D E FIN I T ION S
7.00000001
%00000010
7.00000100
'X00001000
7.00010000 .
7.00100000 .
7.01000000
7.10000000
ASCII-CONVERTED-BINARY IS DEFAUL
LOGICAL SECTOR I/O FLAG
CONSOLE FLAG
REWIND FLAG
OPEN/CLOSE FLAG
INPUT DEVICE FLAG
OUTPUT DEVICE FLAG
RESERVABLE DEVICE FLAG
BIT
D E FIN I T ION S
7.00000100
%00001000
7.00010000
7.10000000
BINARY
OB~ECT
FLAG
TEMP GDB POINTER FLAG
TEMP SDA POINTER FLAG
NON-FILE FORMAT FLAG
D R I V E R
E N TRY
OFF SET
o
3
6
9
12
E ROM
o
1
3
5
6
8
11
$0
E N TRY
$E800
$E822
$E853
$E85A
$E869
$E86D
$E86F
SE872
$E875
$E878
$E87B
$E87E
$E881
$E884
DEVICE
ON OFFSET
DEVICE OFF OFFSET
DEVICE INTIALIZAT!ON OFFSET
,. DEVICE TERMINATION
OFFSET
DEVICE CHARACTER INPUT/OUTPUT OFF
E QUA
T
E S
CURRENT DRIVE NUMBER
STARTING PHYSICAL SECTOR NUMBER
NUMBER OF SECTORS TO OPERATE UPON
#
OF
BYTES
TO
READ FROM LAST SECT
MEMORY ADDRESS FOR
DISK
TRANSFER
DISK TRANSFER STATUS
SECTOR COUNT USED IN DETERMINING
- -)SINGLEi
+ -)
DOUBLE. SIDED
POI
N T S
BOOTSTRAP THE OPERATING SYSTEM
INITIALIZE THE DISK'S PIA AND SSD
CHECK AND PRINT ERROR FROM FDSTAT
PRINT ERROR FROM FDSTAT
READ SECTOR(S)
READ PART!AL SECTOR
READ AND CHECK FOR CRe
WRITE/READ TEST
MOVE HEAD TO TRACK 0
POSITION HEAD TO TRACK OF "STRSCT
WRITE TEST
WRITE DELETED
DATA
MARK
WRITE
AND
VERIFY CRe
WRITE SECTOR(S)
Page
1-08
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