Printer switchbox problemer

du skal ind på bios i maskinen og finde paralel porten hvis den står til bidirektorinal skal du vælge enten ecp eller epp

OK, tak for dit svar. Men hvad er forskellen på ecp og epp?

fandt lidt på google


EPP - Enhanced Parallel Port
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The Enhanced Parallel Port (EPP) was designed in a joint venture between Intel, Xircom & Zenith Data Systems. EPP Ports were first specified in the EPP 1.7 standard, and then later included in the IEEE 1284 Standard released in 1994. EPP has two standards, EPP 1.7 and EPP 1.9. There are differences between the two standards which may affect the operation of devices. This is further discussed latter. EPP has a typical transfer rate in the order of 500KB/S to 2MB/S. This is achieved by allowing the hardware contained in the port to generate handshaking, strobing etc, rather that have the software do it, which was the case with Centronics.

For the hobbyist, EPP is more commonly used than ECP. EPP differs from ECP by the fact that the EPP Port generates and controls all the transfers to and from the peripheral. ECP on the other hand requires the peripheral to negotiate a reverse channel and control the handshaking. This is harder to achieve with common glue logic, thus really requires a dedicated controller or ECP Peripheral Chip.

Hmm, jeg er stadig ikke helt med på hvad det betyder--- jeg tror bare jeg prøver mig frem : )

det er måden hvordan paralel porten kommunikerer på med det tilsluttede udstyr

ok tak. Smid et svar så får du point : )

ok iorden ,takker

fik du løst fejlen ,du kan ellers bare selv beholde poingene