Apers Assembly
Apers Assembly is a Assembly-like Esolang, where all instructions are anagrams of the word apers. It was created by user:Bertrahm. An aper, according to merriam-webster.com, is a person who adopts the appearance or behavior of another especially in an obvious way.
The Language
Apers Assembly has a total of 17 Instructions, these 17 Instructions are represented with 12 anagrams of the word "apers". Single-Line/EOL comments can be made with a semi-colon
Table of Instructions
| MNEMONIC | DESCRIPTION | PARAMETERS |
|---|---|---|
| apers | BRANCH RESULT ZERO | BRANCH ADDRESS |
| apres | BRANCH RESULT GREATER | BRANCH ADDRESS |
| asper | BRANCH RESULT LESS | BRANCH ADDRESS |
| pares | BRANCH | BRANCH ADDRESS |
| parse | LOAD REGISTER | REGISTER, VALUE/ADDRESS/POINTER |
| pears | STORE REGISTER | REGISTER, ADDRESS/POINTER |
| prase | ADD REGISTER + MEMORY | REGISTER, ADDRESS/POINTER |
| presa | SUB REGISTER - MEMORY | REGISTER, ADDRESS/POINTER |
| rapes | INPUT TO REGISTER | REGISTER |
| reaps | OUTPUT REGISTER | REGISTER |
| spare | COMPARE REGISTERS | REGISTER, REGISTER |
| spear | EXIT PROGRAM | NONE |
Instruction Codes
$00 apers $01 apres $02 asper $03 pares $04 parse (VALUE) $05 parse (ADDRESS) $06 parse (POINTER) $07 pears (ADDRESS) $08 pears (POINTER) $09 prase (ADDRESS) $0a prase (POINTER) $0b presa (ADDRESS) $0c presa (POINTER) $0d rapes $0e reaps $0f spare $10 spear
Address/Pointer/Value
Several instructions want either a Address, a Pointer or a Value as a parameter, in Apers Assembly these are defined as follows:
- #<HEX-VALUE> For Values
- *<HEX-VALUE> For Pointers
- $<HEX-VALUE> For Addresses
Labels
Labels are defined using the LABEL keyword followed by its name (Note that the first letter must be capitalised). These get lost in assembling, as the assembler notes the address of the next instruction and places this address at each label mention. Example
LABEL MyLabel ; Some Source Code Here pares MyLabel ; Jump to my label
Label Addresses/Program Instruction Addresses are the only 32-bit numbers in a program
The Runtime
An Apers assembly runtime should have 3 8-bit registers named a, b & c,it should provide 16 Kilo-Bytes of RAM.
Results of Arithmetic Operations should be stored in the Register they were performed with.
Examples
; Hello World with Manipulating Register Values ; instead of just loading each character's hex ; into a. parse a, #48 ; Init Data (H) parse b, #1d ; Adder pears b, $00 parse b, #07 reaps a ; Print H prase a, $00 ; Make a to #65 reaps a ; Print e pears b, $00 ; Get #07 from b parse b, #03 ; Make b #03 prase a, $00 ; Make a to #6c reaps a ; Print ll reaps a pears b, $00 ; Get #03 from b prase a, $00 ; Make a to #6f reaps a ; Output o presa a, $00 ; Make a #6c parse b, #40 ; Make b #40 pears b, $00 ; Get #40 from b presa a, $00 ; Make a #2c reaps a ; Print , parse b, #0c ; Make b #0c pears b, $00 ; Get #0c from b presa a, $00 ; Make a #20 reaps a ; Print SPACE parse b, #37 ; Make b #37 pears b, $00 ; Get #37 from b prase a, $00 ; Make a #57 reaps a ; Print W parse b, #18 ; Make b #18 pears b, $00 ; Get #18 from b prase a, $00 ; Make a to #6f reaps a ; Print o parse b, #03 ; Make b #03 pears b, $00 ; Get #03 from b prase a, $00 ; Make a to #72 reaps a ; Print r parse b, #06 ; Make b #06 pears b, $00 ; Get #06 from b presa a, $00 ; Make a to #6c reaps a ; Print l parse b, #08 ; Make b #08 pears b, $00 ; Get #08 from b presa a, $00 ; Make a to #64 reaps a ; Print d spear ; EXIT