gc80c520a CORERIVER Semiconductor, gc80c520a Datasheet - Page 143

• Manufacturer Part Number: gc80c520a
• Description: Midas1.0 Family Mask Rom/eprom/romless 8-bit Turbo Microcontrollers
• Manufacturer: CORERIVER Semiconductor

MiDAS1.0 Family
PUSH
direct
Push onto stack
Function:
Description:
The Stack Pointer is incremented by 1. The contents of the indicated variable is
then copied into the internal RAM location addressed by the Stack Pointer.
Otherwise no flags are affected.
On entering an interrupt routine the Stack Pointer contains 09h. The Data
Example:
Pointer holds the value 0123h.The instruction sequence,
PUSH DPL
PUSH DPH
will leave the Stack Pointer set to 0Bh and store 23h and 01h in internal RAM
locations 0Ah and 0Bh, respectively.
2
Bytes:
2
Cycles:
Encoding:
1
1
0
1
0 0 0 0
direct address
PUSH
Operation:
←
(SP)
(SP) + 1
←
((SP))
(direct)
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