HT82K68 datasheet(38/40 Pages) HOLTEK

38 / 40 page

SZ [m].i

Skip if bit ²i² of the data memory is zero

Description

If bit ²i² of the specified data memory is 0, the following instruction, fetched

during the current instruction execution, is discarded and a dummy cycle is

replaced to get the proper instruction (2 cycles). Otherwise proceed with the

next instruction (1 cycle).

Operation

Skip if [m].i=0

Affected flag(s)

TC2 TC1

¾¾¾¾¾¾

TABRDC [m]

Move the ROM code (current page) to TBLH and data memory

Description

The low byte of ROM code (current page) addressed by the table pointer

(TBLP) is moved to the specified data memory and the high byte transferred

to TBLH directly.

Operation

[m] ¬ ROM code (low byte)

TBLH ¬ ROM code (high byte)

Affected flag(s)

TC2 TC1

¾¾¾¾¾¾

TABRDL [m]

Move the ROM code (last page) to TBLH and data memory

Description

The low byte of ROM code (last page) addressed by the table pointer (TBLP)

is moved to the data memory and the high byte transferred to TBLH directly.

Operation

[m] ¬ ROM code (low byte)

TBLH ¬ ROM code (high byte)

Affected flag(s)

TC2 TC1

¾¾¾¾¾¾

XOR A,[m]

Logical XOR accumulator with data memory

Description

Data in the accumulator and the indicated data memory perform a bitwise

logical Exclusive_OR operation and the result is stored in the accumulator.

Operation

ACC ¬ ACC ²XOR² [m]

Affected flag(s)

TC2 TC1

¾Ö¾

HT82K68E

August 8, 2000

Preliminary

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