topic Re: 10.2 using JMP instruction with IX1/2 addressing mode in Relocatable Assembly in CodeWarrior for MCU

10.2 using JMP instruction with IX1/2 addressing mode in Relocatable Assembly

MatthewScott_DE — Fri, 27 Apr 2012 00:51:25 GMT

Attempting to JMP to another labeled point, plus an offset, within the same block of relocatable assembly code.

Using codewarrior 10.2 with C and relocatable assembly support on the project. Wondering if there is a complier option that will allow me to use this instruction.

Thank you for the help.

Re: 10.2 using JMP instruction with IX1/2 addressing mode in Relocatable Assembly

bigmac — Fri, 27 Apr 2012 20:42:48 GMT

Hello,

I assume that you are using separate .asm file(s) for your assembly code, and not inline assembly within a .c file?

If the offset label is defined within a .c file, this will need to be imported to the .asm file using XREF. It would be helpful if you would attach a code snippet to demonstrate your problem. You should also mention which errors are reported by the compiler.

Regards,

Mac

Re: 10.2 using JMP instruction with IX1/2 addressing mode in Relocatable Assembly

MatthewScott_DE — Thu, 29 Oct 2020 09:02:59 GMT

This was assembly written within a .c file using the #asm/endasm directives.

EX:

#asm ... LDHX INDEX JMP BITD,XBITD PULA SUB #V2 BLE MTCH BRA NTCH PULA SUB #V2 BLE MTCH BRA NTCH ...#endasm

I have since changed to a different meathod that doesn't involve any indexed jumping. I am now using the index to directly select the SUB value from a part of the direct page memory.