Commodore 2040 User Manual page 55

Table 5. Standard Jump Table
ALTERNATE
USER USER
DESIGNATION
DESIGNATION
FUNCTION
Ul
UA
BLOCK-READ replacement
U2 UB BLOCK-WRITE replacement
2040/3040 4040 8050
U3 UC jump to $1300 $1300 $1300
U4
UD
jump to
$1303 $1303 $1303
U5 UE jump to
$1306 $1306 $1306
U6 UF jump to $D008 $1309 $1309
U7
UG
jump to
$DOOB $130C $130C
U8
UH jump to $DOOE $130F $130F
U9
VI
jump to $DOD5
$10FO $10FO
U:
UJ power up vector
U3 thru U9 commands are user-defined. The locations jumped to are located in the buffer
areas of RAM and routines may be written to reside there and downloaded using the M-W
command. Locations D008, DOOB, DOOE, and DOD5 are located in the expansion ROM slot
in the 2040/3040 and USER commands may be used to access a ROM or EPROM located in
that position. Location IOFO
is
the location of the NMI vector in the 4040 and 8050.
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