Specifications
TITLE'
'QUARK B09TSTRAP
~ROM
FOR
EPROM
BOOT
••
VER
1.0
i
APRIL
3/85'
iQUARK
BOOTSTRAP
PROM
FOR
EPROM
BOOT
-COPYRIGHT (C)
1985
I,
',,
I,:
\
MEGATEL
COMPUTER
TECHNOLOGIES
A
DIVISION
OF
F.
&
K.
MANUFACTURING
CO. ,LIMITED
150
TURBINE DRIVE
;
WESTON, ONTARIO
;
M9L
2S2
·
,
·
,
i-APRIL
3/85
VERSION
1.0
-TAKEN
FROM:
QUARK
BOOTSTRAP
PROM
VER
1.5
-WILL
READ
THE
FIRST
256
BYTES
OF
EPROM
TO
LOCATION
i.
i
80
HEX
AND
THEN
PASS
CONTROL
TO
CODE
AT
80
HEX.
B.MISKETIS
i
FALSE
TRUE
i
F50HZ
i
TIMEOUT
IF
EQU
EQU
EQU
EQU
o
NOT
FALSE
I
true
;PROM SETUP FOR
50
HERTZ
OPERAT,ION
, I
25000
';250MS
TIMEOUT
ON
ALL
O~HER
DISK OPERATIONS
i
THIS
VALUE
MUST
BE
LESS
THAN
aOOOH
I
,I,'
, ,
SAMBITS
VDMBASE
NUMLINES
F50HZ
EQU
EQU
EQU
EQU
EQU
1BE2H
6COOH
40
OECOOH
'
01550H
'
"iSTART
OF
SCREEN
MEMORY.
TY=O
,P1:::,l
MAP
iNUMBER
OF
LINES
TO
C~EAR,
B~CREEN
V ION I ,
ELSE
SAMBITS
VDMBASE
NUMLINES
BOTSCREEN
VERSION
HIDCODE
·
,
LOADADD
LATCHADD
EPROMADD
CODECNT
ENDIF
EQU
EQU
EQU
EQU
EQU
EQU
EQU
EQU
EQU
EQU
07E2H
7000H,
32
OFOOOH
01560ll'
; . ,
OFOO'OH
' .
aOH
aCOH
ODOH
255
I'
" •
, iSTART
OF
SCREEN
MEMORY
,
, iVERSION
1.5,
50H~
,:
,
t i ! I
i START
OF
SCREEN
MEMORY.
MA,PPED
iNUMBER
OF
LINES
TO
CLEAR
I "
iVERSION
1.5,
60az
iPUT
CODE
IN
VIDEO HOLES
~EXECUTION
ADDRESS
OF
I BOOTSTRAP SECTOR
iI/Q
ADDRESS
OF
LATCH
USED
FOR
I i READING
EPROM
iI/O
ADDRESS
OF
FIRST
EPROM
iNUMBER
OF
BYTES
TO
READ
FROM
EPROM
i
MAXIMUM
255
I,
PIAPORT
DSKPORT
PIACRAPORT
PIADRAPORT
SELVAL
EQU
EQU
EQU
EQU
EQU
74H
aOH
75H'
'74H
7FH\
iPERIPHERAL INTERFACE ADAPTER
CONTROL
REGI~
~PIA
DATA
REGISTER
A,
OR
PIA
DATA
DlRECTIOt
i PlAPS -NO DRIVE,SlDE
O,SNGL
DENS,ALFA
·
I
'rrr"'-'-~~~'-"""""""'''''-"--'~'~''
......
.......-rn''.''''"'':''-~-,,:"
••.••
-,,
••
'r.'.
__
••.••
; I
MACLIS
ZaG
;
E4:)PACEMACRO?XAt;?XB
,
LOCAL
,(XC,
?XD
?XC I
SET,
LOW(?XA)
IF
NUL
'?XB
?XD
SET 40H
ELSE
?XD
SET
?XB
ENDIF
'I
~
?')((..
L 1'\
?,k
D