DP80390 datasheet(42/84 Pages) DCD

Part #	DP80390

Description	Pipelined High Performance Microcontroller Instructions set details ver 3.10

PDF	84 Pages

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Manufacturer	DCD [Digital Core Design]

Direct Link	http://www.digitalcoredesign.com

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DP80390 Instructions set details

- 42 -

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are trademarks of their respective owners.

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3.15.

JBC

Instruction:

JBC bit, rel

Function:

Jump if bit is set and clear bit

Description:

If the indicated bit is one, branch to the address indicated; otherwise

proceed with the next instruction. In either case, clear the designated

bit. The branch destination is computed by adding the signed relative

displacement in the third instruction byte to the PC, after incrementing

the PC to the first byte of the next instruction. No flags are affected.

Note:

When this instruction is used to test an output pin, the value used as the

original data will be read from the output data latch, not the input pin.

Operation:

(PC)

← (PC) + 3

if (bit) = 1 then

(bit)

← 0

(PC)

← (PC) + rel

Bytes:

Cycles:

Encoding:

bit address

relative address

DP80390 Datasheet(PDF) 42 Page - Digital Core Design