Specifications

S1C62N82 TECHNICAL SOFTWARE EPSON II-97
APPENDIX A: TABLE OF INSTRUCTIONS
Abbreviations used in the explanations have the following
meanings.
A .............. A register
B .............. B register
X ..............XHL register (low order eight bits of index register
IX)
Y .............. YHL register (low order eight bits of index
register IY)
XH ........... XH register (high order four bits of XHL register)
XL ............ XL register (low order four bits of XHL register)
YH............ YH register (high order four bits of YHL register)
YL ............ YL register (low order four bits of YHL register)
XP ............ XP register (high order four bits of index
register IX)
YP ............ YP register (high order four bits of index
register IY)
SP ............ Stack pointer SP
SPH.......... High-order four bits of stack pointer SP
SPL .......... Low-order four bits of stack pointer SP
MX, M(X) .. Data memory whose address is specified with
index register IX
MY, M(Y)... Data memory whose address is specified with
index register IY
Mn, M(n) .. Data memory address 000H–00FH (address
specified with immediate data n of 00H–0FH)
M(SP) ....... Data memory whose address is specified with
stack pointer SP
r, q ........... Two-bit register code
r, q is two-bit immediate data; according to the
contents of these bits, they indicate registers A,
B, and MX and MY (data memory whose ad-
dresses are specified with index registers IX and
IY)
rq
r1 r0 q1 q0
0000 A
0101 B
1010 MX
1111 MY
Registers specified
Symbols associated with
registers and memory