Instruction List; Function Classification - Epson S1C63000 Core Cpu Manual

• Signed 16-bit PC relative addressing
The addressing mode of the following branch instructions, which have an 8-bit relative address as the
operand, change to the signed 16-bit PC relative addressing with the E flag set to "1". Consequently, it
is possible to extend the branch range to the next address -32768 to +32767. (In this mode these
instructions can branch the entire 64K program memory.)
Instructions that operate in the signed 16-bit PC relative addressing mode with the E flag
JR sign8
CALR sign8
Examples:
LDB %EXT,0x64
JR 0x29
LDB %EXT,0x3A
JR 0x88
LDB %EXT,0xF8
CALR 0x62

4.2 Instruction List

4.2.1 Function classification

Table 4.2.1.1 lists the function classifications of the instructions.
Function classification Mnemonic
Arithmetic
Logic
Transfer
S1C63000 CORE CPU MANUAL
JRC sign8 JRNC sign8
...Works as "JR 0x6429"
...Works as "JR 0x3A88" ( = C, NC, Z, or NZ)
...Works as "CALR 0xF862"
Table 4.2.1.1 Instruction function classifications
Operation
ADD Addition
ADC Addition with carry
SUB Subtraction
SBC Subtraction with carry
CMP Comparison
INC Increment (adds 1)
DEC Decrement (subtracts 1)
AND Logical product
OR Logical sum
XOR Exclusive OR
BIT Bit test
CLR Bit clear
SET Bit set
TST Bit test
LD Load (4-bit data)
LDB Load (8-bit data)
EX Exchange (4-bit data)
JRZ
Function classification
Rotate / shift
Stack control
Branch
System control
EPSON
CHAPTER 4: INSTRUCTION SET
sign8 JRNZ sign8
Mnemonic Operation
RL Rotate to left with carry
RR Rotate to right with carry
SLL Logical shift to left
SRL Logical shift to right
PUSH Push
POP Pop
JR Relative jump
JP Indirect jump
CALZ Absolute call
CALR Rrelative call
RET Return
RETS Return and skip
RETD Return and data set
RETI Interrupt return
INT Software interrupt
NOP No operation
HALT Shift to HALT status
SLP Shift to SLEEP status
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