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Maintenance & Service Guide
Presario 305 Model

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Pin Assignments
| Battery Pack Operations


Specifications

This section covers the following specifications of Compaq Presario 305 Model Portable Computers:

Physical and environmental System Interrupts System DMA
System I/O Address System Memory Catalog Display
Diskette drive Hard drive CD drive
Battery pack

 

 

 

 

U.S.

Metric

Dimensions

Height
Depth
Width
0.89 in
8.5 in
10.4 in
22.6 mm
216 mm
264 mm

Weight

3.07 - 3.26 lb

1.39 - 1.48 kg

AC Adapter

Operating Voltage
Operating Current
Operating Frequency Range
Maximum Transient

90 to 260 VAC RMS
1.1 A RMS
47-63 Hz AC
4/50 kV

Temperature

Operating
Nonoperating

41° to 95 °F
-22° to 140 °F

5° to 35 °C
-30° to 60 °C

Relative Humidity (noncondensing)

Operating
Nonoperating (tw = 38.7°C max)

10 to 90%
5 to 90%
101.6 °F

10 to 90%
5 to 90%
38.7 °C

Altitude (nonpressurized environment)

Operating
Nonoperating

0 to 10,000 ft
0 to 30,000 ft

0 to 3.05 km
0 to 9.14 km

Shock

Operating
Non operating

-10 G, 11 ms, half sine
60 G, 2 ms, half sine

Vibration

Operating


Nonoperating

0.25 G, 50 to 500 Hz sine, 1/2 Oct/Min sweep rate

1 G, 50 to 500 Hz sine, 1/2 Oct/Min sweep rate

NOTE:  Applicable product safety standards specify thermal limits for plastic surfaces. The computer operates well within this range of temperatures.

 

System Interrupts

Hardware IRQ

System Function

IRQ1

Timer Interrupt

IRQ2

Cascaded

IRQ3

PCMCIA

IRQ4

Modem (COM1)

IRQ5

Audio (default)*

IRQ6

Diskette Drive

IRQ7

Parallel

IRQ8

RTC

IRQ9

Infrared

IRQ10

PCMCIA
IRQ12 Internal Point Stick or External Mouse
IRQ13 Coprocessor (Not available to any peripheral)
IRQ14 IDE Interface (Hard Disk)
NOTES:
PCMCIA cards may assert IRQ3,IRQ4, IRQ5, IRQ7, IRQ9, IRQ10, IRQ11, or IRQ15. Either the infrared or the serial port may assert IRQ3 or IRQ4.
*Default configuration; audio possible configurations are: IRQ5, IRQ7, IRQ9, IRQ10 or none.

 

System DMA

Hardware DMA

System Function

0 Available for audio
1 Entertainment Audio (Default; Alternate =DMA0, DMA3, None)
2 Diskette Drive
3 ECP Parallel Port LPT1 (Default; Alternate =DMA0, None)
4 DMA Controller Cascading (Not available)
5 Available for PC Card
6 Not assigned
7 Not assigned

NOTE: PC Card controller can use DMA1, 2 or 5.

 

 

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