Support for 'mul' instructions on for 68HC705

Question

gtjennings1 opened this issue 2 years ago · comments

Hi there,

68705_test.asm (505): error: Unknown Mnemonic 'mul'.

Is mul supported?

Thanks for your help

GrantMTG · Answer 1 · Wed Mar 23 2022 11:47:28 GMT+0800 (China Standard Time)

I don't see that in the data sheets. Do you have a document that indicates there is such an opcode (for the part number you are using)?

GrantMTG · Answer 2 · Wed Mar 23 2022 11:54:43 GMT+0800 (China Standard Time)

I don't see that in the data sheets. Do you have a document that indicates there is such an opcode (for the part number you are using)?

Never mind. I was thinking of the 68705 (sans HC). If you need one in a pinch you can drop a Define Constant Byte 0x42 to get you by.

gtjennings1 · Answer 3 · Wed Mar 23 2022 12:03:20 GMT+0800 (China Standard Time)

Ok; thank you. I'll try it.

Andrew Davie · Answer 4 · Wed Mar 23 2022 12:06:48 GMT+0800 (China Standard Time)

A macro would make it easy...

  MAC mul
 dc $42
  ENDM

and usage... just use "mul" and it would look identical to an implemented instruction.

gtjennings1 · Answer 5 · Wed Mar 23 2022 12:17:12 GMT+0800 (China Standard Time)

That works great; thanks again.