compaq notebook evo n150 series User Manual

Specifications
Maintenance and Service Guide6–7
Ta b l e 6 - 5
CD-ROM Drive
Applicable diskCD-ROM (Mode 1, 2, and 3)
CD-XA ready (Mode 2, Form 1 and 2)
CD-I ready (Mode 2, Form 1 and 2)
CD-R (read only)
CD Plus
Photo CD (single/multisession)
CD-Extra
Video CD
CD-WO (fixed packets only)
CD-Bridge
Center hole diameter.59in 15mm
Disk diameter120 mm, 80 m
Disk thickness1.2 mm
Tr a c k p i t c h1.6 µ
Access time
Random
Full Stroke

6–8Maintenance and Service Guide
Specifications
Ta b l e 6 - 6
DVD-ROM Drive
Applicable diskDVD-5, DVD-9, DVD-10
CD-ROM (Mode 1 and 2)
CD Digital Audio
CD-XA ready (Mode 2, Form 1 and 2)
CD-I ready (Mode 2, Form 1 and 2)
CD-R (read only)
CD Plus
Photo CD (single/multisession)
CD-Bridge
Center hole diameter.59in 15mm
Disk diameter120 mm, 80 mm
Disk thickness1.2 mm
Tr a c k p i t c h.74 µ
Access time
Random
Full Stroke

Specifications
Maintenance and Service Guide6–9
Ta b l e 6 - 7
AC Adapter
Weight
Power supply(input)
Operating voltage
Operating current
Operating frequency range
Maximum transient100to240VACRMSNominal
1.3 A RMS
50 to 60 Hz Nominal
4/50 kV 

6–10Maintenance and Service Guide
Specifications
Ta b l e 6 - 8
Battery Packs
Dimensions
Lithium ion (Li ion)
Height
Length
Width
Weight
Cells
Nickel Metal Hydride (NiMH)
Height
Length
Width
Weight
Cells.82 in
3.78 in
5.28 in
.86 lb
8
.67 in
6.16 in
5.51 in
621 mm
96 mm
134 mm
.39 kg
17 mm
131 mm
140 mm
Energy
Li ion
Vo l t a g e
Amp-hour capacity
Watt-hour capacity
NiMH
Vo l t a g e
Amp-hour capacity
Watt-hour capacity14.8 V
3.8 Ah
53.5 Wh
11.1 V
3.1 Ah
34.4 Wh
Environmental requirements
Temperature...

Specifications
Maintenance and Service Guide6–11
Ta b l e 6 - 9
System DMA
Hardware DMA System Function
DMA0 Available for audio
DMA1 Entertainment audio
(default; alternate = DMA0, DMA3, none)
DMA2 Diskette drive
DMA3 ECP parallel port LPT1
(default; alternate = DMA0, none)
DMA4 DMA controller cascading (not available)
DMA5 Available for PC Card
DMA6 not assigned
DMA7 not assigned

PC Card controller can use DMA 1, 2, or 5. 

6–12Maintenance and Service Guide
Specifications
Ta b l e 6 - 1 0
System Interrupts
Hardware IRQ System Function
IRQ0 System timer
IRQ1 Keyboard controller
IRQ2 Cascaded
IRQ3 COM2
IRQ4 COM1
IRQ5 Audio (default)*
IRQ6 Diskette drive
IRQ7 Parallel port
IRQ8 Real time clock (RTC)
IRQ9 Infrared
IRQ10 System use
IRQ11 System use
IRQ12 Internal point stick or external mouse
IRQ13 Coprocessor (not available to any peripheral)
IRQ14 IDE interface (hard drive and optical drive)
IRQ15 System use

PC Cards may...

Specifications
Maintenance and Service Guide6–13
Ta b l e 6 - 1 1
System I/O Addresses
I/O Address(hex)System Function(shipping configuration)
000 - 00F DMA controller no. 1
010 - 01F unused
020 - 021 Interrupt controller no. 1
022 - 024 Opti chipset configuration registers
025 - 03F unused
02E - 02F 87334 “Super IO” configuration for CPU
040 - 05F Counter/timer registers
044 - 05F unused
060 Keyboard controller
061 Port b
062 - 063 unused
064 Keyboard controller
065 - 06F unused
070 - 071 NMI...

6–14Maintenance and Service Guide
Specifications
I/O Address(hex)System Function(shipping configuration)
0A2 - 0BF unused
0C0 - 0DF DMA controller no. 2
0E0 - 0EF unused
0F0 - 0F1 Coprocessor busy clear/reset
0F2 - 0FF unused
100 - 16F unused
170 - 177 Secondary fixed disk controller
178 - 1EF unused
1F0 - 1F7 Primary fixed disk controller
1F8 - 200 unused
201 Joystick (decoded in ESS1688)
202 - 21F unused
220 - 22F Entertainment audio
230 - 26D unused
26E - 26 unused
278 - 27F unused
280 - 2AB unused...

Specifications
Maintenance and Service Guide6–15
I/O Address(hex)System Function(shipping configuration)
2F0 - 2F7 unused
2F8 - 2FF Infrared port
300 - 31F unused
320 - 36F unused
370 - 377 Secondary diskette drive controller
378 - 37F Parallel port (LPT1/default)
380 - 387 unused
388 - 38B FM synthesizer - OPL3
38C - 3AF unused
3B0 - 3BB VGA
3BC - 3BF Reserved (parallel port/no EPP support)
3C0 - 3DF VGA
3E0 - 3E1 PC Card controller in CPU
3E2 - 3E3 unused
3E8 - 3EF Internal modem
3F0 - 3F7 “A” diskette...

6–16Maintenance and Service Guide
Specifications
Ta b l e 6 - 1 2
System Memory Map
Size Memory Address System Function
640 K 00000000 - 0009FFFF Base memory
128 K 000A0000 - 000BFFFF Video memory
48 K 000C0000 - 000CBFFF Video BIOS
160 K 000C8000 - 000E7FFF unused
64 K 000E8000 - 000FFFFF System BIOS
15 M 00100000 - 00FFFFFF Extended memory
58 M 01000000 - 047FFFFF Super extended memory
58 M 04800000 - 07FFFFFF unused
2 M 08000000 - 080FFFFF Video memory (direct access)
4 G 08200000 - FFFEFFFF unused
64...