Tandy 1000
Technical Reference Manual
iAPX
88/10
8-BIT HMOS MICROPROCESSOR
808818088-2
• 8·Bit Data Bus Interface
• 16·Bit Internal Architecture
• Direct Addressing Capability to 1 Mbyte
of Memory
• Direct Software Compatibility with
iAPX 86/10 (8086 CPU)
• 14·Word by 16·Bit Register Set with
Symmetrical Operations
• 24 Operand Addressing Modes
•
IJyte, Word, and Block Operations
• 8-Bit and 16-Blt Signed and Unsigned
Arithmetic
in
Binary or Decimal,
Including Multiply and Divide
• Compatible with 8155·2, 8755A·2 and
8185·2 Multiplexed Peripherals
•
Two
Clock Rates:
5 MHz for 8088
8 MHz for 8088-2
The
Intel"
iAPX 88/10 is a new generation,
high
performance
microprocessor
implemented
in N-channel,
depletion
load,
silicon gate
technology
(HMOS), and packaged in a 40-pin CerDIP package. The
processor
has attributes
of
both
B-
and
16-bit microprocessors. It is
directly
compatible
with
iAPX B6/10
software
and 8080/B085 hardware and peripherals.
C·BUS
MIN
[MAX
I
MODE MODE
GND
Vee
A
••
INSTRUCTION
A161SJ
STREAM
BYTE
QUEUE
A111S4
A,O
A19/$6
BUS
A9
sso
(HIGH)
INTERFACE
AI
MN/MX
UNIT
AD'
/IT)
A06
HOLD
IRQ'~I
IAll,ffil
w-
ILOCKI
101M
1521
DTlA
(511
AH
MN
'SO)
BH
ALE
(0501
CH
EXECUTION
DH
NMI
iN1'A
(OS'I
UNIT
INTR
rEST
CLK
READY
GND
Figure 1. iAPX 88/10 CPU Functional Block Diagram
Figure 2. iAPX 88/10
Pin
Configuration
Int.,1
Corporation Assumes
He
~'Y
lor
the Use
ot
Any
Circuitry Other Than Circuitry Embodied in an Inlel PrOduct.
No
Other Circuit Patent
lic~
are
Implied
©INTEl
CORPOAATlON, 1911 NOVEMBER
,.,
OADEA
HUMMA, 2'112II-OO'
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