Z85C3010PSG Zilog, Z85C3010PSG Datasheet - Page 157
Z85C3010PSG
Manufacturer Part Number
Z85C3010PSG
Description
IC 10MHZ Z8500 CMOS SCC 40-DIP
Manufacturer
Zilog
Series
SCCr
Specifications of Z85C3010PSG
Processor Type
Z80
Features
Error Detection and Multiprotocol Support
Speed
10MHz
Voltage
5V
Mounting Type
Through Hole
Package / Case
40-DIP (0.620", 15.75mm)
Cpu Speed
8MHz
Digital Ic Case Style
DIP
No. Of Pins
40
Supply Voltage Range
5V
Operating Temperature Range
0°C To +70°C
Svhc
No SVHC (18-Jun-2010)
Base Number
85
Rohs Compliant
Yes
Clock Frequency
10MHz
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
269-3934
Z85C3010PSG
Z85C3010PSG
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Application Note
Interfacing Z80
SOFTWARE CONSIDERATIONS - POLLED OPERATION
There are several options available for servicing interrupts
on the Z8500 peripherals. Since the vector of IP registers
can be read at any time, software can be used to emulate
the Z80 interrupt response. The interrupt vector read
reflects the interrupt status condition even if the device is
Z80 Vector Interrupt Response, Emulation by
Software
;This code emulates the Z80 vector interrupt
;operation by reading the device interrupt
;vector and forming an address from a vector
;table. It then executes an indirect jump to
;the interrupt service routine.
INDX: LD
VECTAB:
6-22
OUT
IN
INC
RET
AND
LD
LD
LD
ADD
LD
INC
LD
LD
JP
DEFW
DEFW
DEFW
DEFW
DEFW
DEFW
DEFW
DEFW
®
CPUs to the Z8500 Peripheral Family
A,CIVREG
(CTRL), A
A, (CTRL)
A
Z
00001110B
E,A
D,0
HL,VECTAB
HL,DE
A, (HL)
HL
H, (HL)
L,A
(HL)
INT1
INT2
INT3
INT4
INT5
INT6
INT7
INT8
;WRITE REG. PTR.
;READ VECT. REG.
;VALID VECTOR?
;NO INT - RETURN
;MASK OTHER BITS
;FORM INDEX VALUE
;ADD VECT. TABLE ADDR.
;GET LOW BYTE
;GET HIGH BYTE
;FORM ROUTINE ADDR.
;JUMP TO IT
;CURRENT INT. VECT. REG
programmed to return to vector that does not reflect the
status change (SAV or VIS is not set). The code below is
a simple software routine that emulates the Z80 vector
response operation.
UM010901-0601
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