Maxim Integrated MAXQ Family Users Guide: MAXQ2010 Supplement - Manual (Page 82)

MAXQ Family User’s Guide:
MAXQ2010 Supplement
18-2
Note 1: The active accumulator (Acc) is not allowed as the src in operations where it is the implicit destination.
Note 2: Only module 8 and modules 0 to 5 (when implemented for a given product) are supported by these single-cycle bit opera-
tions. Potentially affects C or E if PSF register is the destination. Potentially affects S and/or Z if AP or APC is the destination.
Note 3: The terms Acc and A[AP] can be used interchangeably to denote the active accumulator.
Note 4: Any index represented by or found inside [ ] brackets is considered variable, but required.
Note 5: The active accumulator (Acc) is not allowed as the dst if A[AP] is specified as the src.
Note 6: The ‘{L/S}’ prefix is optional.
Note 7: Instructions that attempt to simultaneously push/pop the stack (e.g. PUSH @SP--, PUSH @SPI--, POP @++SP, POPI
@++SP) or modify SP in a conflicting manner (e.g., MOVE SP, @SP--) are invalid.
Note 8: Special cases: If ‘MOVE APC, Acc’ sets the APC.CLR bit, AP is cleared, overriding any autoinc/dec/modulo operation
specified for AP. If ‘MOVE AP, Acc’ causes an autoinc/dec/modulo operation on AP, this overrides the specified data
transfer (i.e., Acc is not transferred to AP).
Table 18-1. Instruction Set Summary (continued)
MNEMONIC DESCRIPTION
16-BIT INSTRUCTION
WORD
STATUS
BITS
AFFECTED
AP
INC/DEC NOTES
BRANCHING
{L/S}JUMP src IP ← IP + src or src f000 1100 ssss ssss 6
{L/S}JUMP C, src If C=1, IP ← (IP + src) or src f010 1100 ssss ssss 6
{L/S}JUMP NC, src If C=0, IP ← (IP + src) or src f110 1100 ssss ssss 6
{L/S}JUMP Z, src If Z=1, IP ← (IP + src) or src f001 1100 ssss ssss 6
{L/S}JUMP NZ, src If Z=0, IP ← (IP + src) or src f101 1100 ssss ssss 6
{L/S}JUMP E, src If E=1, IP ← (IP + src) or src 0011 1100 ssss ssss 6
{L/S}JUMP NE, src If E=0, IP ← (IP + src) or src 0111 1100 ssss ssss 6
{L/S}JUMP S, src If S=1, IP ← (IP + src) or src f100 1100 ssss ssss 6
{L/S}DJNZ LC[n], src If --LC[n] <> 0, IP← (IP + src) or src f10n 1101 ssss ssss 6
{L/S}CALL src @++SP ← IP+1; IP ← (IP+src) or src f011 1101 ssss ssss 6, 7
RET IP ← @SP-- 1000 1100 0000 1101
RET C If C=1, IP ← @SP-- 1010 1100 0000 1101
RET NC If C=0, IP ← @SP-- 1110 1100 0000 1101
RET Z If Z=1, IP ← @SP-- 1001 1100 0000 1101
RET NZ If Z=0, IP ← @SP-- 1101 1100 0000 1101
RET S If S=1, IP ← @SP-- 1100 1100 0000 1101
RETI IP ← @SP-- ; INS← 0 1000 1100 1000 1101
RETI C If C=1, IP ← @SP-- ; INS← 0 1010 1100 1000 1101
RETI NC If C=0, IP ← @SP-- ; INS← 0 1110 1100 1000 1101
RETI Z If Z=1, IP ← @SP-- ; INS← 0 1001 1100 1000 1101
RETI NZ If Z=0, IP ← @SP-- ; INS← 0 1101 1100 1000 1101
RETI S If S=1, IP ← @SP-- ; INS← 0 1100 1100 1000 1101
DATA
TRANSFER
XCH (MAXQ20 only) Swap Acc bytes 1000 1010 1000 1010 S Y
XCHN Swap nibbles in each Acc byte 1000 1010 0111 1010 S Y
MOVE dst, src dst ← src fddd dddd ssss ssss C, S, Z, E (Note 8) 7, 8
PUSH src @++SP ← src f000 1101 ssss ssss 7
POP dst dst ← @SP-- 1ddd dddd 0000 1101 C, S, Z, E 7
POPI dst dst ← @SP-- ; INS ← 0 1ddd dddd 1000 1101 C, S, Z, E 7
CMP src E ← (Acc = src) f111 1000 ssss ssss E
NOP No operation 1101 1010 0011 1010