35 lines
1.3 KiB
Markdown
35 lines
1.3 KiB
Markdown
INSTRUCTION SET FOR DESMOS COMPUTER
|
|
|
|
FLAGS
|
|
-----
|
|
|
|
EQUALS
|
|
GREATER THAN
|
|
LESS THAN
|
|
|
|
INSTRUCTIONS
|
|
------------
|
|
|
|
STO ( value, address ) -> store a value into an address
|
|
MOV ( fromaddr, toaddr) -> move a value from one address to another
|
|
PSTO ( value, ptr ) -> store value into the address referenced in ptr
|
|
ADD ( addra, addrb, toaddr ) -> add a value from two addresses to a third address
|
|
SUB ( addra, addrb, toaddr ) -> subtract a value from two addresses to a third address
|
|
MUL ( addra, addrb, toaddr ) -> multiply a value from two addresses to a third address
|
|
DIV ( addra, addrb, toaddr ) -> divide a value from two addresses to a third address
|
|
CMP ( addra, addrb ) -> compare two values, store result in flags
|
|
- set all flags to false
|
|
- if equal, set EQUALS
|
|
- if addra > addrb, set GREATER THAN
|
|
- if addra < addrb, set LESS THAN
|
|
|
|
ELD ( address ) -> store the value of EQUALS flag to address (1 if true, 0 if false)
|
|
GLD ( address ) -> store the value of GREATER THAN flag to address (1 if true, 0 if false)
|
|
LLD ( address ) -> store the value of LESS THAN flag to address (1 if true, 0 if false)
|
|
|
|
JMP ( address ) -> change execution to address
|
|
BE ( address ) -> branch if equal
|
|
BNE ( address ) -> branch if not equal
|
|
BG ( address ) -> branch if greater
|
|
BL ( address ) -> branch if less
|