Add notes from 2023-08-05

notes/2023-08-05--dev-notes.md

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+# Dev notes — 2023-08-05
+
+- consider refactoring assembler to do something more like 'tokenize, then call helper functons'
+
+- consider an extended system:
+  - add a byte in the ~zero-page to act as a flag for display mode
+    - 0 = 1 byte per pixel (default)
+    - 1 = 1 bit per pixel
+  - add another 16 ops (or fewer)
+    - rotate left / right (or shift?)
+    - AND
+    - OR
+  - more flags?
+  - another register?
+    - would require several new ops
+  - add binary input/output to assembler
+
+- consider gamepad vs. hex keypad
+  - stick with hex
+  - but permit gamepad since that's a subset (NES layout = 8 bits/bytes, depending on mode)
+  - look at how uxn does it?
+
+- <mark>TODO: rewrite to call things 'opcodes' and 'operands'</mark>
+
+- add bank switching for higher 128 bytes
+  - add a flag in the ~zero-page
+
+- try writing:
+  - a 'greater than' routine
+
+- make coding forms!