There are two chunks of 6502 assembly code used as filler text.
Chunk 1 6640
Chunk 2 7F6E
IY:MBUFADL
RTS
;
MSTEN0
LDA Z :MBUFADH
CMP I /BH
BNE R :MST112
LDA Z :MBUFADL
CMP I /A2H
BCC R :MST121
BCS R :MST128
MST112
CMP I /8
BNE R :MST121
LDA Z :MBUFADL
CMP I /5EH
BCC R :MST128
MST121
TYA
CLC
ADC Z :MBUFADL
AND I /1FH
CMP I /2
BEQ R :MST128
CMP I /1DH
BNE R :MSTEN1
MST128
LDA I /10H
RTS
MST103
INY
MST104
INX
MSTEN1
LDA IY:MBUFADL
CMP I /11H
BCC R :MST102
CMP I /90H
BCS R :MST102
LDA I /0
MST102
RTS
;
MS10X
TX
ANK SEARCH
STNKPS1
LDY Z :BUFDATA1
BEQ R :STP110
SONO MAMA
DEY
DEY
BMI R :STP102
BEQ R :STP105
JSR A :SB20AD1
STP102
JSR A :DECA