UPD750064CU datasheet(54/82 Pages) NEC

54 / 82 page

µPD750064, 750066, 750068, 750064(A), 750066(A), 750068(A)

Data Sheet U10165EJ2V0DS00

Instruction

Number

Addressing

Mnemonic

Operand

of Machine

Operation

Skip Condition

Group

of Bytes

Cycles

Area

Special

GETINotes 1, 2

taddr

µPD750064

*10

• When TBR instruction

PC11–0

← (taddr) 3–0 + (taddr+1)

• When TCALL instruction

(SP–4) (SP–1) (SP–2)

← PC11–0

(SP–3)

← MBE, RBE, 0, 0

PC11–0

← (taddr) 3–0 + (taddr+1)

← SP–4

• When instruction other than TBR and

Depending on

TCALL instructions

the reference

(taddr) (taddr+1) instruction is executed.

instruction

µPD750066, 750068

• When TBR instruction

PC12–0

← (taddr) 4–0 + (taddr+1)

• When TCALL instruction

(SP–4) (SP–1) (SP–2)

← PC11–0

(SP–3)

← MBE, RBE, 0, PC12

PC12–0

← (taddr) 4–0 + (taddr+1)

← SP–4

• When instruction other than TBR and

Depending on

TCALL instructions

the reference

(taddr) (taddr+1) instruction is executed.

instruction

µPD750064

*10

• When TBR instruction

PC11–0

← (taddr) 3–0 + (taddr+1)

• When TCALL instruction

(SP–6) (SP–3) (SP–4)

← PC11–0

(SP–5)

← 0, 0, 0, 0

(SP–2)

← ×, ×, MBE, RBE

PC11–0

← (taddr) 3–0 + (taddr+1)

← SP–6

• When instruction other than TBR and

Depending on

TCALL instructions

the reference

(taddr) (taddr+1) instruction is executed.

instruction

µPD750066, 750068

• When TBR instruction

PC12–0

← (taddr) 4–0 + (taddr+1)

• When TCALL instruction

(SP–6) (SP–3) (SP–4)

← PC11–0

(SP–5)

← 0, 0, 0, PC12

(SP–2)

← ×, ×, MBE, RBE

PC12–0

← (taddr) 4–0 + (taddr+1)

← SP–6

• When instruction other than TBR and

Depending on

TCALL instructions

the reference

(taddr) (taddr+1) instruction is executed.

instruction

Notes 1.

The TBR and TCALL instructions are the table definition assembler pseudo instructions of the GETI

instruction.

The operations indicated with thick lines can be performed only in the Mk II mode. The other operations

can be performed only in the Mk I mode.

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