FIM

Name	Fetch Immediate
Function	8 bits of immediate data are loaded into the register pair specified by RP.
Syntax	FIM RPp Data
Assembled
Binary	0010RRR0 DDDDDDDD
Decimal	32, then incrementing by 2 until 46 (1st word)
Hexadecimal	0x20, then incrementing by 2 until 0x2E (1st word)
Symbolic
Execution	2 words, 8-bit code and an execution time of 21.6 \({\mu}\) sec
Side-effects	Not Applicable
Implemented	fim

Detailed Description

The 8 bits of immediate data (word 2) are loaded into the named register pair. The register pairs are defined within the opcode as shown below:

Example program

/ Example program
        org    ram
        fim    2  254
        end

This will load the 8-bit decimal value 254 into the register pair 2 & 3.

After execution, register 2 will contain the upper 4 bits of the value 254, with register 3 containing the lower 4 bits i.e. 15 and 14 respectively.

This is because decimal 254 is represented as 0xFE, so register 2 will contain 0xF (decimal 15), while register 3 will contain 0xE (decimal 14).

Pyntel4004