[EXTMEM-2
[TEST FOR EXTERNAL MEMORY OPERITION
[DIAGONAL LINE
$400
CLR
SETi1
2777
STAi1
ADAi
1
XSK 1
JMP p-4
SETi1
2777
LDAi
2777  [START ADDRESS IN EXT MEMORY -1
OPR 0
LDAi1
OPR 4
XSK 1
JMP p-3
#1B SETi1
2777
LDAi
2777  [START ADDRESS IN EXT MEMORY  -1
OPR 0
LDAi1
DIS 1
OPR 3
DIS 1
XSK 1
JMP p-5
JMP 1B
[END