In SX Microcontrollers, SX/B Compiler and SX-Key Tool, peterverkaik wrote:

You can a simple test at the start:
org #200
cjae opcode,#67,@jumptable2 ;example value = start opcode in next jump table
mov w,opcode
add pc,w
;jumptable1 for opcodes 0-66

org $400

jumptable2:
mov w,opcode
sub w,#67
add pc,w

;jumptable2 for opcodes>=67

You can extend this to more pages.
But I don't think you will reach 256 opcodes as there is only
2K codespace in a SX28. For 256 routines that would be 8 words per routine,
not counting the jumptables.
If you limit the opcodes to 127 then at most two jumptables are required.

regards peter

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