2021-01-29 19:17:59 +00:00
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# Uxn
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A stack-based VM, written in ANSI C.
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## Build
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```
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cc uxn.c -std=c89 -Os -DNDEBUG -g0 -s -Wall -Wno-unknown-pragmas -o uxn
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```
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2021-01-29 19:35:59 +00:00
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2021-01-30 01:49:10 +00:00
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## Assembly Syntax
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2021-01-29 19:35:59 +00:00
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```
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2021-01-30 01:49:10 +00:00
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: starting a definition
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& obtaining pointers
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( stack comments
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` inlining bytecodes
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' strings
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# numbers
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$ characters
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~ vector
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[ 12 34 ] real values
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< 12 34 > relative values
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( 12 34 ) deadzone
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```
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```
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;add-two JSR
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BRK
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:add-two
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[ 2 ] ADD RTS
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2021-01-29 19:35:59 +00:00
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```
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## Design
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### CPU
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- Build stack with pointer
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- Print stack
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- Build memory
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### PPU
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2021-01-29 20:14:37 +00:00
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### Assembly
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2021-01-30 01:49:10 +00:00
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#### Addressing
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2021-01-29 21:59:16 +00:00
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2021-01-30 01:49:10 +00:00
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- `label`, a named offset[TODO]
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- `literal`, a numeric value
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- `pointer`, pointer to an address[TODO]
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2021-01-29 20:14:37 +00:00
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2021-01-29 19:35:59 +00:00
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### Assembler
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### Emulator
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- SDL Layer
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