ramble.md

my rambles

basically going to cmd+a delete everything

instead of being treated like an interpreter, im going to actually assemble the source code into object programs.

Why am i doing this?

1. because i want to learn more about assemblers and stuff because i think they are Cool.
2. my code is a mess and an interpreter isn't really the most ideal way to do something like this.
3. i want to learn more about assemblers

how it will be implemented next

there will be an additional DAT instruction (DAT #n/Bn/&n), for use with labels for defining data.

example:

LDA letterA
OUT // will output "A"

letterA: DAT #65

will be a two-pass assembler

on the first pass i:

• go through each line of code
• is it a label definition?
  • yes:
    • store label name and line in a table (address symbol table)
  • no:
    • is it END instruction?
      • yes:
        • go to second pass
      • no:
        • go to next line

on the second pass:

• go through each line
• is instruction valid?
  • yes:
    • is operator valid? (some instructions dont take one or require an address etc)
      • yes:
        • is the operator a label?
          • yes:
            • using the symbol table, replace with label line and save to output
          • no:
            • save to output
      • no:
        • stop and report error to user
  • no:
    • stop and report error to user
• output the assembled program to the binary format

type Instruction struct {
  Operand int // will be later decoded back into instructions that are useful
  Operator int // Numbr .
}

• output binary to file

assembly done!! yayy

running the code:

• basically how i am now, read in file according to the spec i set for the binary file
• run it lol