Rainbow Electronics HT49R70A-1 - Manual (Page 39)

SZ [m] Skip if data memory is 0
Description If the contents of the specified data memory are 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]=0
Affected flag(s)
TC2 TC1 TO PD OV Z AC C
¾ ¾ ¾ ¾ ¾ ¾ ¾ ¾
SZA [m] Move data memory to ACC, skip if 0
Description The contents of the specified data memory are copied to the accumulator. If the contents 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]=0
Affected flag(s)
TC2 TC1 TO PD OV Z AC C
¾ ¾ ¾ ¾ ¾ ¾ ¾ ¾
SZ [m].i Skip if bit i of the data memory is 0
Description If bit i 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 instruc-
tion (2 cycles). Otherwise proceed with the next instruction (1 cycle).
Operation Skip if [m].i=0
Affected flag(s)
TC2 TC1 TO PD OV Z AC C
¾ ¾ ¾ ¾ ¾ ¾ ¾ ¾
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 TO PD OV Z AC C
¾ ¾ ¾ ¾ ¾ ¾ ¾ ¾
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 TO PD OV Z AC C
¾ ¾ ¾ ¾ ¾ ¾ ¾ ¾
HT49R70A-1
Rev. 1.00 39 December 4, 2001