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Document ID: LWIK-3RVQCN |
TP 755CE/CSE/CD/CDV/CX - Hardware resource assignments
Applicable to: World-Wide
This is the default IRQ and DMA assignments for the ThinkPad 755CE/CSE/CD/CDV/CX.
ThinkPad 755Ce, 755Cse, 755CD, 755CDV, 755CV, & 755CX Memory Map
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Location |
Use |
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0000-9FFFF |
System RAM |
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A000-AFFF |
Video Graphics |
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B000-B7FF |
Mono Video |
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B800-BFFF |
Video Text |
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C000-C7FF |
Default Video BIOS |
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C800-DFFF |
Available |
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E000-E7FF |
Available |
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E800-EFFF |
Available (optional Video BIOS) |
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F000-FFFF |
System BIOS |
ThinkPad 755CD & 755CDV Interrupt Assignments
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2 |
3 |
4 |
5 |
7 |
9 |
10 |
11 |
15 | |
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DSP Modem |
X |
O | |||||||
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Serial Port |
O |
O | |||||||
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Infrared |
O |
X |
O |
O |
O |
O | |||
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DSP Sound Blaster |
X |
O |
O |
O | |||||
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Parallel Port |
O |
X | |||||||
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DSP Audio |
O |
O |
X |
O |
O | ||||
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Internal CD-ROM |
X | ||||||||
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Enhanced Video |
O |
O |
X |
O |
O |
O | |||
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Cascade Interrupt |
X |
ThinkPad 755Ce, 755Cse, 755CV, 755CX Interrupt Assignments
|
2 |
3 |
4 |
5 |
7 |
9 |
10 |
11 |
15 | |
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DSP Modem |
X |
O | |||||||
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Serial Port |
O |
O | |||||||
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Infrared |
O |
X |
O |
O |
O |
O | |||
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DSP Sound Blaster |
X |
O |
O |
O | |||||
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Parallel Port |
O |
X | |||||||
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DSP Audio |
O |
O |
X |
O |
O | ||||
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Cascade Interrupt |
X |
Where: X = Default; O = Optional
Note 1
The following interrupts are used by the system: IRQ 0 (Timer), IRQ 1 (Keyboard), IRQ 6 (Floppy Diskette Drive), IRQ 8 (Real-time Clock), IRQ 12 (Mouse/Trackpoint), IRQ 13 (Math Coprocessor), and IRQ 14 (Hard Disk Drive).
Note 2
Those models of the 755CX without the MWAVE DSP would not have IRQ3, IRQ5, and IRQ10 used.
ThinkPad 755Ce, 755Cse, 755CV, 755CX, 755CD, 755CDV DMA Channel Assignments
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DMA |
Default Assignment |
Other Possible Uses |
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DRQ 0 |
Infrared |
Mwave DSP, Sound Blaster |
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DRQ 1 |
Sound Blaster |
Mwave DSP |
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DRQ 2 |
Diskette drive | |
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DRQ 3 |
Infrared | |
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DRQ 4 |
Cascade | |
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DRQ 5 |
Unused | |
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DRQ 6 |
Unused |
Mwave DSP, Sound Blaster |
|
DRQ 7 |
Mwave DSP |
Sound Blaster |
Below is an ACII Text file for you to view and print out. It contains valuable Technical information on this Thinkpad range.
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Search Keywords |
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Hint Category |
Configuration | |
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Date Created |
30-01-96 | |
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Last Updated |
26-03-98 | |
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Revision Date |
12-09-98 | |
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Brand |
IBM ThinkPad | |
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Product Family |
ThinkPad 755C/CS, ThinkPad 755CE/CSE, ThinkPad 755CX, ThinkPad 755CV, ThinkPad 755CD, ThinkPad 755CDV | |
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Machine Type |
9545 | |
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Model |
Various | |
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TypeModel |
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Retain Tip (if applicable) |
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