3Com 3C389 manual DEVICE=C\DOS\EMM386.EXE RAM 1024 X=D000-D1FF FRAME=C000

Models: 3C389

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Expanded Memory Specification

A-5

page. A sample enhanced mode memory manager line in your CONFIG.SYS is:

DEVICE=C:\DOS\EMM386.EXE RAM 1024 X=D000-D1FF FRAME=C000

The token ring 3C389 PC Card uses D0000-D1FFF for 8-KB MMIO. The FRAME= parameter sets the base address of the EMS page frame (the page frame uses C0000-CFFFF). So, no 3C389 PC Cards should be set to use memory in the range C0000-CFFFF.

Using a point enabler with the 3C389 PC Card at

D0000-DBFFF, the C0000-CFFFF range is free for the EMS page. A sample compatibility mode memory manager line in your CONFIG.SYS is:

DEVICE=C:\DOS\EMM386.EXE RAM 1024 X=D000-D1FF X=D800-DBFF FRAME=C000

The token ring 3C389 PC Card uses D0000-D1FFF for 8-KB MMIO and D8000-DBFFF for 16-KB SRAM. The FRAME= parameter sets the base address of the EMS page frame (the page frame uses C0000-CFFFF). So, no 3C389 PC Cards should be set to use memory in the range C0000-CFFFF.

Using IBM Card Services, you can set the /MA option such that a 64 KB block is free for the EMS page frame. A sample memory manager line in your CONFIG.SYS is:

DEVICE=C:\DOS\EMM386.EXE RAM 1024 X=D000-DBFF FRAME=C000

.

.

DEVICE=C:\DICRMU01.SYS /MA=D000-DBFF

Because of the /MA option, IBM Card Services will use memory in the range D0000-DBFFF only. The FRAME= parameter sets the base address of the EMS page frame (the page frame uses C0000-CFFFF). So, no 3C389 PC Cards should be set to use memory in the range C0000-CFFFF.

Page 69
Image 69
3Com 3C389 manual DEVICE=C\DOS\EMM386.EXE RAM 1024 X=D000-D1FF FRAME=C000