For a while, Runer112 and Deep Thought both had IRC scripts running in #Omnimaga channel that are one of the few rare scripts we actually allowed so far there. The first one, by Runer112, lets you convert hexadecimal code to Z80 assembly and the second one, by Deep Thought, lets you do the opposite. If the assembly code is too large, a Pastebin link is posted instead, to avoid flooding the channel.

The syntax for Runer112's script is "@Z80 <hexadecimal>" and for Deep Thought (DThought) it's ":asm <Z80 code>".

However, DThought script is still buggy, so some syntax errors might cause the script to become unavailable for a while. Runer112 has plans to merge both together. Also note that these scripts are moderated, though. Abuse will lead to a warning then a ban, like any other spam. If you have a lot of code to convert, we recommend using them via /msg instead.

Hopefully this should be useful for our growing hex code fanbase and those who want to quickly translate hex opcodes to Z80 syntax.

Awesome!  Thanks Deep (and Runer, though I've already thanked you ).

Oh that's even cooler

Lol that would be cool. Maybe in the future such script could be implemented directly on the forums. Eeems has a script for that, though, if you look through the Misc page of the site.

Lol that would be cool. Maybe in the future such script could be implemented directly on the forums. Eeems has a script for that, though, if you look through the Misc page of the site.

Oh, that would be cool! Do you mean like if I did @Z80 210000224B8421A29DEF1045C90548656C6C6F in a post, it would return the mnemonics?! That could be really cool...

I thought I was seeing a lot of stuff like that...now I know why
Looks useful, though I would probably never use it myself (until/if I learn ASM)

for a z80 programmer

Yeah, true.  Maybe in the near future there might be whatever the prizm uses, or 68k, or whatever the inspire uses, or...

Just wanted to let everyone know how mine works, since it's not really explained anywhere. It has become quite a massive project.

To use it, you can either enter your queries into OmnomIRC right on the forums or through a normal IRC client. If you use the latter, you can also /msg me with your queries. Anyways, to use this, start a message with one of the following: .z80, !z80, or @z80. After this, you can then enter one of four things for different effects:

• Enter the hex for an instruction to see detailed information about the instruction (mnemonic, hex, bytes, cycles, flag effects, and description)
• Enter the mnemonic for an instruction to see detailed information about the instruction
• Enter the hex for multiple instructions to receive disassembled mnemonics
• Enter the mnemonics for multiple instructions separated by backslashes to receive compiled hex (Note that backslashes work oddly in OmnomIRC and require about five of them in a row to be entered)

I believe this should support every instruction on the z80, including all undocumented instructions and bcalls. I'm particularly proud of my recent number handling system for assembling code, as it supports all equates defined in ti83plus.inc and math functions like a real assembler!


If you notice any bugs or have any other feedback, please tell me! And if you use it heavily in a short period of time and it stops responding to you, that's not a bug, that's flood control. If you're using an IRC client, you can avoid flood control by /msg'ing me with as many queries as you want.

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EDIT: Examples of the four main ways to use this. If you're using OmnomIRC, the bot will always respond publicly like in the first example. If you're an IRC user, you have a few more options.

You enter: @z80 CB30
I respond: <Runer112> [Z80] Instruction \ Main: sll reg8 \ Instance: sll b [CB30]\ Bytes: 2 \ Cycles: 8/15 \ Flags: SZ-0-P0C \ Undocumented \ Description: The contents of reg8 are shifted left one bit position. The contents of bit 7 are put into the carry flag and a one is put into bit 0.

You enter: .z80 jr nz,$-14
I respond: -Runer112- [Z80] Instruction \ Main: jr cc,ofs8 \ Instance: jr nz,$-14 [20F0] \ Bytes: 2 \ Cycles: 12/7 \ Flags: -------- \ Description: If condition cc is true, the signed value imm8 is added to pc. The jump is measured from the start of the instruction opcode.

You enter: !Z80 E3EF9247218384D1010900EDB0
I respond: -Runer112- [Z80] Disassembly \ http://z80.pastebin.com/D0SRU5X5 \ ex (sp),hl \ B_CALL(_SetXXXXOP2) \ ld hl,$8483 \ pop de \ ld bc,$0009 \ ldir

You enter: /msg Runer112 .Z80 B_CALL(_RunIndicOn) \ set donePrgm,(iy+doneFlags) \ ret \ .db 19,$37,%10101010,plotSScreen % 256 >> (7/2)
I respond in a private message: <Runer112> [Z80] Assembly \ http://z80.pastebin.com/KDbM1xHq \ EF6D45FDCB00EEC91337AA08

Nice showcases of usage.
As curiosity, what is the programming language in which the bots are coded?

I think @z80 is MySQL.