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M34512M2 Datasheet, PDF (63/80 Pages) Mitsubishi Electric Semiconductor – SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER | |||
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PRELIMINARY NSocothimcaene:gpTeah.riasmisetnrioct laimfiintsalasrepescuibfijceacttioton.
MITSUBISHI MICROCOMPUTERS
4512 Group
SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER
Skip condition
Datailed description
â
â Branch within a page : Branches to address a in the identical page.
â
â Branch out of a page : Branches to address a in page p.
â
â Branch out of a page : Branches to address (DR2 DR1 DR0 A3 A2 A1 A0)2 specified by registers D and A in
page p.
â
â Call the subroutine in page 2 : Calls the subroutine at address a in page 2.
â
â Call the subroutine : Calls the subroutine at address a in page p.
â
â Call the subroutine : Calls the subroutine at address (DR2 DR1 DR0 A3 A2 A1 A0)2 specified by registers D
and A in page p.
â
â Returns from interrupt service routine to main routine.
Returns each value of data pointer (X, Y, Z), carry flag, skip status, NOP mode status by the continuous de-
scription of the LA/LXY instruction, register A and register B to the states just before interrupt.
â
â Returns from subroutine to the routine called the subroutine.
Skip at uncondition â Returns from subroutine to the routine called the subroutine, and skips the next instruction at uncondition.
â
â
(EXF0) = 1
â Clears (0) to the interrupt enable flag INTE, and disables the interrupt.
â Sets (1) to the interrupt enable flag INTE, and enables the interrupt.
â Skips the next instruction when the contents of EXF0 flag is â1.â
After skipping, clears (0) to the EXF0 flag.
(EXF1) = 1
â Skips the next instruction when the contents of EXF1 flag is â1.â
After skipping, clears (0) to the EXF1 flag.
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