FW82371EB Intel, FW82371EB Datasheet - Page 23

• Manufacturer Part Number: FW82371EB
• Manufacturer: Intel

Specifications of FW82371EB

• Lead Free Status / RoHS Status: Not Compliant

12.
Problem:
Implication: In a PIIX4E system, if a PCPCI DMA cycle follows an ISA DMA Verify cycle that reaches terminal
Workaround: None.
Status:
13.
Problem:
Implication: 1. Device 9 cannot be used as a monitor for I/O device addresses exclusive of 62 and 66h.
Workaround: None. If a generic I/O device monitor exclusive of I/O address 62 and 66h is needed, then use Device
Status:
Specification Update
R
ISA Verify followed by PCPCI DMA
The PIIX4E upon completion of an ISA Verify Mode cycle that reaches Terminal Count (TC), will not
transition an internal TC signal from the TC state to the Idle state.
count, with no other DMA, ISA Master or ISA Refresh cycles between them, the PIIX4E will assert the
TC signal on the first data transfer of the PCPCI DMA cycle. This results in an incomplete data transfer.
There are currently no plans to fix this erratum.
Device Monitor 9 and access to IO locations 62/66h
1. If the Device 9 Idle Enable (IDL_EN_DEV9), Burst Reload Enable (BRLD_EN_DEV9), or Global
Reload Enable (GRLD_EN_DEV9) bits are set; the idle, burst, or global standby timer will reload for
I/O accesses to ISA Legacy addresses 62 or 66h, regardless of the Generic Decode Monitor Enable bit
setting (GDEC_MON_DEV9).
2. If Device 9 Trap Enable bit (TRP_EN_DEV9) is set, the PIIX4E enables generation of a trap SMI for
accesses to ISA Legacy addresses 62 or 66h regardless of the Generic Decode Monitor Enable bit setting
(GDEC_MON_DEV9) and the value of the Programmable Base Address and Programmable Mask
register settings (BASE_DEV9 & MASK_DEV9)
2. GPI4 cannot be used exclusively to reload the idle, burst, or global standby timers because accesses to
10, if it is available.
This will not be fixed in the PIIX4E
NOTE: GPI4 is still available as a General Purpose Input.
ISA Legacy addresses 62 or 66h will also reload the times.
Intel
®
82371EB (PIIX4E)
23