Kontron MOPSlcdLX - Manual (Page 34)

KTD-S0005-C Page 30 Special Hardware Hints
MOPSlcdLX User's Guide
20 Special Hardware Hints
20.1 ISA Bus Limitations
The ISA bus implementation has the following four restrictions:
➤
16 bit DMA cycles (located at DMA5 – DMA7) are not supported
➤
An ISA device may take control of the bus (ISA bus master mode). This mode is not sup-
ported
➤
Simultaneous usage of standard legacy floppy and DMA cycles is not possible
➤
Using ISA graphic cards certain high color depth graphic modes may show disturbances
i.e. vertical lines. This is due to non optimum timings in the FINTEK ISA bridge which
cannot be fixed
20.2 PCI Bus Limitations
The PCI bus implementation has the following three restrictions:
➤
Only 3.3V PCI boards/cards are supported (do not use 5V PCI boards/cards without level-
shifter)
➤
Only PCI boards/cards with speed of 33 MHz will be run
➤ Some problems exists when using the KONTRON ADA9 Evaluation Board (refering to PCI
slots). KONTRON cannot guarantee that all PCI cards runs error-free
20.3 Security Block
The standard version of AMD LX800 doesn't contain an EEPROM for storing a hidden key. Please contact
KONTRON for further information.