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Added more info to the readme on using stuff and accessing memory.

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Izaya 2016-12-11 11:27:55 +11:00
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README.md
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@ -1,6 +1,15 @@
# test3d # Test3d
Low-tech computing for Minetest Low-tech computing for Minetest
## T400 instructions ## Memory access
Memory access in this mod occurs over digilines, with the channel as the prefix plus the memory address, and the message as either the new value or 'get' to get it returned, so for example:
|Prefix |Address | Value | Channel | Message |
|-------|---------------|-------|---------------|---------------|
|A | 1 | 4 | A1 | 4 |
|Default| 15 | get | DefaultF | get |
## T400
### Instructions
TOS = top of stack TOS = top of stack
| ins | function | mnemonic | | ins | function | mnemonic |
@ -13,3 +22,6 @@ TOS = top of stack
|4090 | suptract TOS | sub | |4090 | suptract TOS | sub |
|4089 | jump to TOS | jmp | |4089 | jump to TOS | jmp |
|4088 | skip if TOS = zero | sez | |4088 | skip if TOS = zero | sez |
## T416
The T416 is a 16-word memory. It stores 16 ints and is accessed as described in the Memory access section.