DEC AlphaServer 8200 Technical Manual page 350

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Table 7-60 IDPNSE0–3 Register Bit Definitions (Continued)
Name
HOSEn_PWROK
HOSEn_ERR
7-132 System Registers
Bit(s)
Type
Function
<1>
R, X
HOSEn Power OK. This bit is derived from
the HOSEn_PWROK signal and reflects its cur-
rent level. If the associated hose cable is con-
nected properly to the I/O adapter and has suffi-
cient power to process commands, then this bit
will be a 1. The transition of this bit from either
1 to 0 or 0 to 1 causes HOSEN_PWROK_TR<3>
to set. This bit has no effect on I/O port inter-
rupts.
The bit indicates an I/O adapter's power status
on a given hose "n" as follows:
<0>
R, X
HOSEn Error. This bit is derived from the
hose signal ERROR. The I/O adapters assert
this signal when they detect any fatal error that
prevents them from using normal Up Hose
packet protocols. The I/O adapters continue to
assert this signal until cleared by an associated
HOSEn_RESET.
The bit indicates an I/O adapter's error status on
a given hose "n" as follows:
An IPL 17 interrupt is generated when this bit
sets if interrupts are enabled by INTR_NSES
(ICCNSE<31>).
HOSEn_PWROK in IDPNSE3 indicates an
I/O adapter's power status on hose 3.
HOSEn_PWROK in IDPNSE2 indicates an
I/O adapter's power status on hose 2.
HOSEn_PWROK in IDPNSE1 indicates an
I/O adapter's power status on hose 1.
HOSEn_PWROK in IDPNSE0 indicates an
I/O adapter's power status on hose 0.
HOSEn_ERR in IDPNSE3 indicates an
I/O adapter's error status on hose 3.
HOSEn_ERR in IDPNSE2 indicates an
I/O adapter's error status on hose 2.
HOSEn_ERR in IDPNSE1 indicates an
I/O adapter's error status on hose 1.
HOSEn_ERR in IDPNSE0 indicates an
I/O adapter's error status on hose 0.

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