Verbatim injection - Feature Request

[theboy181]

I would like the ability to inject RAW ASM into a ROM using BASS.

Issues I have come across in the past are limits on the amount of RAW HEX you can inject into an origin, and branch offsets (example B 0x8015BB76) getting confused by the ROM.

Could you please add the ability to strait up inject RAW ASM, and HEX starting from a sing origin in a ROM?

I hop this is possible.

[ARM9]

I don't quite understand what you're asking for here, an instruction like the mips branch you're referring to uses a relative operand. Can you use the jump opcode instead? j 0x8015bb74 (note that mips addresses must be a multiple of 4)

[theboy181]

Yes I can and do use jump commands. It’s the bne, beq that cause me pain. If I set the origin 0x100 then use bne 0x80003456 I will get an error when I run bass assembler.

If I understand bass thinks that I want to do an offset from 0x100.

If I could set the origin for ROM and have the ability to set the RAM location that would be helpful.

Let’s say

Origin $0x100:0x8000100

Then the bnz would know that it’s writing in the ROM, but also know that the offset base is in the ram.

A command swich could be used with origin, and instead that would just write your code and not check that the branch is correct. Just a verbatim write to ROM.

[theboy181]

nop
nop
j       0x807283b4
nop          
lui             s6,0x8007
lw      s6,0xb5f4(s6)           //sets lap value
slti            at,s6,0x0004            // if lap value = 4 branch
dw      $1420ff85       //bnez  at,0x807281c0
nop          
j       0x80728390
nop          
addiu           t8,r0,0x0001
origin          $00cad4cc       //80728414
dw              $5020ffe1       //beqzl at,0x8072839c
origin          $00cad584       //807284CC vs. mode LOD
nop          

This is the example where I have used dw to inject the result I want.

[ARM9]

What you need is the base directive, in addition to origin. For example base 0x8072'8414. It sets which address the assembler tells the instructions they'll execute at.

[theboy181]

Can you lay that out in the example above while using the ASM I commented out?

[thar0x29a]

We will write an smal set of tutorials soon. I'll keep on mind handling base and origin and others.