NEC PD750008 Manuale Utente

(SP–2) <– x, x, MBE, RBE, (SP–3) <– PC

7-4

(SP–4) <– PC

3-0, 

(SP–5) <– 0, 0, 0, PC

12

(SP–6) <– PC

11-8

PC

12-0

 <– addr1, SP <– SP–6

[Mk I mode]

(SP–1) <– PC

7-4

, (SP–2) <– PC

3-0

(SP–3) <– MBE, RBE, 0, PC

12

(SP–4) <– PC

11-8

, PC

12-0

 <– addr, SP <– SP–4

addr = 0000H – 1FFFH

[Mk II mode]

(SP–2) <– x, x, MBE, RBE

(SP–3) <– PC

7-4

, (SP–4) <– PC

3-0

(SP–5) <– 0, 0, 0, PC

12

, (SP–6) <– PC

11-8

PC

12-0

 <– addr, SP <– SP–6

addr = 0000H – 1FFFH

Saves the contents of the program counter (return address), memory bank enable flag (MBE), and register

bank enable flag (RBE) to the data memory location (stack) addressed by the stack pointer (SP), then branches

to the location addressed by the 14-bit immediate data addr after decrementing SP.

Remark "Function" in this section is applicable to the µPD750008 whose program counter consists of

13 bits (addr = 0000H to 1FFFH).

However, this is also applicable to the µPD750004 whose program counter consists of 12

bits (addr = 0000H to 0FFFH), the µPD750006 whose program counter consists of 13 bits

(addr = 0000H to 17FFH), and the µPD75P0016 whose program counter consists of 14 bits

(addr = 0000H to 3FFFH).