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Maintenance & Service Guide
Presario 2250 Series
2510, 2410 ES & 4240 ES Personal Computers

Home  |   Preface    |   Product Description   |   Troubleshooting   |   Illustrated Parts   |    Removal & Replacement
Jumpers & Switches   |   Specifications   |   Connector Pins    |   Power Cord Requirements


System Video Memory

Models: 2250 Series, 2410 ES, 2510

Video Memory

Resolution Colors Vertical Refresh (Hz)
1280 × 1024* 256  
1024 × 768 64K 75
800 × 600 (Default) 64K 75
640 × 480 64K 75
1024 × 768 256 75
800 × 600 256 75
640 × 480 256 75
*The 2254, 2255, 2510, 2410 ES Series Series high resolution of 1280 × 1024 × 256 can only be achieved if the monitor supports this resolution.

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System DMA

Models: 2250 Series, 2410 ES, 2510

System DMA

Hardware System Function (Default) Alternate Mappings
DMA 0 Available
DMA 1 Entertainment Audio 0, 3, none
DMA 2 Diskette Drive None
DMA 3 Available
DMA 4 Internally used for cascading
DMA 5 Entertainment Audio 0, 1, none
DMA 6 Available
DMA 7 Available

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System Interrupts

Models: 2250 Series, 2410 ES, 2510

System Interrupts

Hardware IRQ System Function
IRQ 0 Refresh Timer
IRQ 1 Keyboard
IRQ 2 Interrupt Controller Cascade
IRQ 3 Modem (COM 2) shared data/fax
IRQ 4 Serial Port (COM 1)
IRQ 5 System Audio*
IRQ 6 Diskette Drive Controller
IRQ 7 Parallel Port (LPT 1)*
IRQ 8 Real-Time Clock
IRQ 9 USB
IRQ 10 Available
IRQ 11 PCI Interrupt, Video, DVD
IRQ 12 PS/2 Mouse
IRQ 13 Numeric Coprocessor
IRQ 14 Primary IDE Interface
IRQ 15 Secondary IDE Interface

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System I/O

Models: 2250 Series, 2410 ES, 2510

System I/O

I/O Address (Hex) System Function (Shipping Configuration)
0000h - 000Fh Direct Memory Access (DMA) Controller
0020h - 0021h Programmable Interrupt Controller
0040h - 0043h System Timer
0060h - 0060h Standard 101/102-Key or Microsoft Natural Keyboard
0061h - 0061h System Speaker
0064h - 0064h Standard 101/102-Key or Microsoft Natural Keyboard
0070h - 0071h System CMOS/Real Time Clock
0080h - 0080h Motherboard Resources
0081h - 008Fh Direct Memory Access (DMA) Controller
00A0h - 00A1h Programmable Interrupt Controller
00C0h - 00DFh Direct Memory Access (DMA) Controller
00ECh - 00EFh Motherboard Resources
00F0h - 00FFh Numeric Data Processor
0170h - 0177h Standard IDE/ESDI Hard Disk Controller
01F0h - 01F7h Standard IDE/ESDI Hard Disk Controller
0201h - 0201h Gameport Joystick
0220h - 022Fh XpressAUDIO 16-bit sound
02F8h - 02FFh Compaq 336-Dfi, 56K Upgradable Modem
0330h - 0331h XpressAUDIO 16-bit sound
0376h - 0376h Standard IDE/ESDI Hard Disk Controller
I/O Address (Hex) System Function (Shipping Configuration)
0378h - 037Fh Printer Port (LPT1)
0388h - 038Bh XpressAUDIO 16-bit sound
03B0h - 03BBh Cyrix GX
03C0h - 03DFh Cyrix GX
03F0h - 03F5h Standard Diskette Drive Controller
03F6h - 03F6h Standard IDE/ESDI Hard Disk Controller
03F7h - 03F7h Standard Diskette Drive Controller
03F8h - 03FFh Communications Port (COM1)
0480 - 048Fh Motherboard Resources
04D0h - 04D1h Motherboard Resources
0CF8h - 0CFFh PCI bus
10ECh - 10EFh Motherboard Resources
20ECh - 20EFh Motherboard Resources
3000h - 303Fh PCI Standard ISA Bridge
30ECh - 30EFh Motherboard Resources
4000h - 400Fh Motherboard Resources
40ECh - 40EFh Motherboard Resources
50ECh - 50EFh Motherboard Resources
60ECh - 60EFh Motherboard Resources
70ECh - 70EFh Motherboard Resources
80ECh - 80EFh Motherboard Resources
90ECh - 90EFh Motherboard Resources
A0ECh - A0EFh Motherboard Resources
B0ECh - B0EFh Motherboard Resources
C0ECh - C0EFh Motherboard Resources
D0ECh - D0EFh Motherboard Resources
E0ECh - E0EFh Motherboard Resources
F0ECh - F0EFh Motherboard Resources

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System Memory

Models: 2250 Series, 2410 ES, 2510

System Memory

Memory Address System Function
00000000h - 0009FFFFh System Board extension for PnP BIOS
000A0000h - 000AFFFFh Cyrix GX
000C0000h - 000C7FFFh Cyrix GX
000E0000h - 000FFFFFh System Board extension for PnP BIOS
00100000h - 00DDFFFFh System Board extension for PnP BIOS
40000000h - 4FFFFFFFh Motherboard Resources
FFFC0000h - FFFFFFFFh Motherboard Resources

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Power Supply

Models: 2250 Series, 2410 ES, 2510

Power Supply

  U. S. Metric
Input Specifications    
Nominal Line Voltage 180 to 264 VAC 180 to 264 VAC
Range Input Line 90 to 132 VAC 90 to 132 VAC
Frequency Range 47 to 63 Hz 47 to 63 Hz
Power Factor 0.6 0.6
Input Power 280 Watts 280 Watts
Input Current 3.0 at 90 VAC 3.0 at 180 VAC
Inrush Current 60 A at 132 VAC (cold start) 60 A at 264 VAC (cold start)
Holdup Time 16 ms from zero crossing at 120 VAC 16 ms from zero crossing at 240 VAC
General Specifications    
Full Output Rating To 122° F and 5,000 ft
To 90° F and 10,000 ft (derate linearly)
 
Minimum Load 3.0 A on + 5.0 V output; 0.04 A on 12 V output  
Ambient Temperature Range    
Operating 50° to 122° F 10° to 50° C
Storage -40° to 151° F -40° to 66° C
Dielectric Voltage Withstand    
Input to Ground 2500 VAC/1 second  
Safety Standard UL 1950; CSA 22.2 #950 or CSA 22.2 #234; TUV/VDE EN 60 950 (VDE0805/11.91); EMKO-TSE (74-SEC) 207/93
Input Transient Susceptibility
Common and Differential Mode
(superimposed on AC line)
2500 V, 1 us, damped sinusoid
600 V, 10 us pulse
Differential Mode 20% step change in AC input voltage

 

 

 
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