SRegMachine

Simple register machine for learning assembler (Windows .NET 4.8)

Instruction List

Loading and moving Values

LOADI <reg0>$value # Load the value '$value'into register 'reg0'

MOV <reg0> <reg1> # Copyies the value from 'reg1'into'reg0'

Math with registers

Every math instructions will set flags (zero, neg, ov)

ADD <reg0> <reg1> # 'reg0' = 'reg0'+'reg1'

SUB <reg0> <reg1> # 'reg0' = 'reg0'-'reg1'

MUL <reg0> <reg1> # 'reg0' = 'reg0'*'reg1'

DIV <reg0> <reg1> # 'reg0' = 'reg0' / 'reg1'

MOD <reg0> <reg1> # 'reg0' = 'reg0' % 'reg1'

Math with integers

Every math instructions will set flags (zero, neg, ov)

ADD <reg0>$value # 'reg0' = 'reg0'+'value'

SUB <reg0>$value # 'reg0' = 'reg0'-'value'

MUL <reg0>$value # 'reg0' = 'reg0'*'value'

DIV <reg0>$value # 'reg0' = 'reg0' / 'value'

MOD <reg0>$value # 'reg0' = 'reg0' % 'value'

Jumping

Labels are defined by typing a ':' (Collum)

JMP$label_name # Will jumpt to 'label_name'

JMPZ$label_name # Will jumpt to 'label_name' when zero flag is set

JMPNZ$label_name # Will jumpt to 'label_name' when zero flag is NOT set

JMPN$label_name # Will jumpt to 'label_name' when negative flag is set

JMPNN$label_name # Will jumpt to 'label_name' when negative flag is NOT set

JMPO$label_name # Will jumpt to 'label_name' when overflow flag is set

JMPNO$label_name # Will jumpt to 'label_name' when overflow flag is NOT set

Flow Control

HOLD # Will hold the execution

RST # Will reset to the first instuction (continues execution)

EOF # End of file (RST + HOLD)