Z84C9008VSG Zilog, Z84C9008VSG Datasheet - Page 60

• Manufacturer Part Number: Z84C9008VSG
• Description: IC 8MHZ Z80 KIO 84-PLCC
• Manufacturer: Zilog
• Series: Z80r

Specifications of Z84C9008VSG

• Processor Type: Z80
• Features: Serial/Parallel Input/Output, Counter/Timer Circuit
• Speed: 8MHz
• Voltage: 5V
• Mounting Type: Surface Mount
• Package / Case: 84-LCC (J-Lead)
• Maximum Operating Temperature: + 70 C
• Minimum Operating Temperature: 0 C
• Mounting Style: SMD/SMT
• Cpu Speed: 8MHz
• Digital Ic Case Style: LCC
• No. Of Pins: 84
• Supply Voltage Range: 5V
• Operating Temperature Range: 0°C To +70°C
• Svhc: No SVHC (18-Jun-2010)
• Rohs Compliant: Yes
• Base Number: 84
• Clock Frequency: 8MHz
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

40
UM008005-0205
Z80 CPU
User’s Manual
Loc
0000 0610
0002 4a
0003 7b
0004 eb
0005 210000
0008 cb39
000a if
000b 3001
good 19
000e eb
goof 29
0010 eb
0011 10f5
0013 c9
Table 4. Multiply Listing (Continued)
Obj
Code
Stmt Source Statement
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
;
;
mloop: srl
;
;
noadd: ex
Hardware and Software Implementation Examples
a
ld
ld
ld
ex
ld
rra
jr
add
add
ex
djnz
ret;
end;
low order bits of multiplier
b, 16;
c, d;
a, e;
de, hl;
hl, 0;
c;
nc, noadd-$; if no carry, skip the add.
hl, de;
de, h l;
hl, hl;
de, hl;
mloop-$;
number of bits-initialize
move multiplier
move multiplicand
clear partial result
shift multiplier right
least significant bit is
in carry.
else add multiplicand to
partial result.
shift multiplicand left
by multiplying it by two.
repeat until no more bits.