參數(shù)資料
型號: intel386 DX
廠商: Intel Corp.
英文描述: 32-Bit CHMOS Microprocessor With Integrated Memory Management(32位CHMOS 微處理器帶集成存儲管理)
中文描述: 32位CHMOS微處理器集成內(nèi)存管理(32位CHMOS微處理器帶集成存儲管理)
文件頁數(shù): 92/139頁
文件大?。?/td> 1587K
代理商: INTEL386 DX
Intel386
TM
DX MICROPROCESSOR
231630–31
NOTE:
HOLD is a synchronous input and can be asserted at any CLK2 edge, provided setup and hold (t
23
and t
24
) require-
ments are met. This waveform is useful for determining Hold Acknowledge latency.
Figure 5-27. Requesting Hold from Active Bus (NA
Y
asserted)
5.6 SELF-TEST SIGNATURE
Upon completion of self-test, (if self-test was re-
quested by holding BUSY
Y
LOW at least eight
CLK2 periods before and after the falling edge of
RESET), the EAX register will contain a signature of
00000000h indicating the Intel386 DX passed its
self-test of microcode and major PLA contents with
no problems detected. The passing signature in
EAX, 00000000h, applies to all Intel386 DX revision
levels. Any non-zero signature indicates the Intel386
DX unit is faulty.
5.7 COMPONENT AND REVISION
IDENTIFIERS
To assist Intel386 DX users, the Intel386 DX after
reset holds a component identifier and a revision
identifier in its DX register. The upper 8 bits of DX
hold 03h as identification of the Intel386 DX compo-
nent. The lower 8 bits of DX hold an 8-bit unsigned
binary number related to the component revision
level. The revision identifier begins chronologically
with a value zero and is subject to change (typically
it will be incremented) with component steppings in-
tended to have certain improvements or distinctions
from previous steppings.
These features are intended to assist Intel386 DX
users to a practical extent. However, the revision
identifier value is not guaranteed to change with ev-
ery stepping revision, or to follow a completely uni-
form numerical sequence, depending on the type or
intention of revision, or manufacturing materials re-
quired to be changed. Intel has sole discretion over
these characteristics of the component.
92
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