User`s guide

144 Hardware Problems
MX1 Reference Guide E-EQ-MX1RG-D
Upper Memory Conflicts
Some drivers require an unused upper memory block. In this case, “unused” means that the upper
memory block
2
does not contain any ROM or RAM.
Driver Memory Required Default Address Range
PCMCS95.EXE 4K C800-C8FF
PCMATA.SYS 16K per SRAM card C900
PCMFFCS.EXE 4K to 64K D000 - (dependent on variable size)
PCMFDD.EXE 16K D000-D3FF
Available upper memory (C800 - DFFF) is crucial to using PCMCIA cards successfully. The
addresses shown above have the following characteristics:
• The system has no RAM at these addresses.
• The system has no ROM at these addresses.
• Run a utility, such as MSD.EXE (not included with the MX1) which shows the memory
requested with ADDR= and /BASE= parameters listed as “available”.
IRQ Assignments
AT compatible systems have 16 IRQs, numbered 0 through 15, many of which are already
assigned as follows:
IRQs
...................Device(s)
IRQ0...................Timer Output
IRQ1...................Keyboard
IRQ2...................Route to Interrupt Controller 2, IRQ8-IRQ15
IRQ3...................Serial Port COM2
IRQ4...................Serial Port COM1
IRQ5...................Reserved for PC Cards
IRQ6...................Floppy Disk Controller
IRQ7...................Power Management
IRQ8...................Real Time Clock
IRQ9...................Keyboard
IRQ10.................PC Card Controller
IRQ11.................Reserved for PC Cards
IRQ12.................Touch Screen Data
IRQ13.................80x87 Math Coprocessor
IRQ14.................Hard Disk Controller
IRQ15.................Some Hard Disk/SCSI Controllers (Default)
2
UMB is fully allocated in the MX1. Do not load drivers that require UMB or EMM386.EXE.