Specifications

Processor Description (V40)
these microprocessors, plus a few more. The added instructions
are outlined below.
The following instructions are useful in testing and setting status
bits for I/O operations and in bit manipulation for graphics
applications.
INS Insert bit field
EXT Extract bit field
TEST1 Test bit
SET1 Set bit
CLR1 Clear bit
NOT1 Complement bit
The instructions shown below are useful for manipulating binary
numbers in a decimal format.
ADD4S BCD string addition
SUB4S BCD string subtraction
CMP4S BCD string comparison
ROL4 Rotate BCD digit left
ROR4 Rotate BCD digit right
The string I/O instructions shown below can be combined with
the repeat prefixes for high speed data transfers between I/O and
memory.
INM String input
OUTM String output
Other instructions not found in the 80188 instruction set are
listed below.
REPC Repeat while carry set
REPNC Repeat while carry cleared
FPO2 Floating point operation 2
BRKEM Break for emulation mode
RETEM Return from emulation mode
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