Acer Extensa 390 Service Guide
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System Introduction1-9 1.4 Hardware Configuration and Specification 1.4.1 Memory Address Map Table 1-3Memory Address MapAddress RangeDefinitionFunction000000 - 09FFFF640 KB memoryBase memory0A0000 - 0BFFFF128 KB video RAMReserved for graphics display buffer0C0000 - 0CBFFFVideo BIOSVideo BIOS0F0000 - 0FFFFF64 KB system BIOSSystem BIOS100000 - top limitedExtended memorySIMM memoryFE0000 - FFFFFF256 KB system ROMDuplicate of code assignment at 0E0000-0FFFFF1.4.2 Interrupt Channel Map Table 1-4Interrupt Channel MapPriorityInterrupt NumberInterrupt Source1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19SMI NMI IRQ 0 IRQ 1 IRQ 2 IRQ 8 IRQ 9 IRQ 10 IRQ 11 IRQ 12 IRQ 13 IRQ 14 IRQ 15 IRQ 3 IRQ 4 IRQ 5 IRQ 6 IRQ 7Power management unit Parity error detected, I/O channel error Interval timer, counter 0 output Keyboard Interrupt from controller 2 (cascade) Real-time clock / Cascaded to INT 0AH (IRQ 2) / Audio / PCMCIA Audio (option) / PCMCIA / Internal modem / Serial communication port 2 / PCMCIA / USB Audio (option) / PCMCIA / Internal modem / Serial communication port 1 / PCMCIA PS/2 mouse INT from coprocessor Hard disk controller / PCMCIA controller CD-ROM controller / PCMCIA controller Serial communication port 2 / Internal modem / Audio / PCMCIA Serial communication port 1 / Internal modem / Audio / PCMCIA Parallel port (option) / Internal modem / Audio / PCMCIA Diskette controller Parallel port (option) / Audio
1-10Service Guide1.4.3 DMA Channel Map Table 1-5DMA Channel MapControllerChannelAddressFunction1 1 1 1 2 2 2 20 1 2 3 4 5 6 70087 0083 0081 0082 Cascade 008B 0089 008AAudio (option) / Audio Audio (option) / ECP / Audio / FIR Diskette Audio (option) / ECP / FIR Cascade Not support Not support Not support / Audio1.4.4 I/O Address Map Table 1-6I/O Address MapAddress RangeDevice000 - 00F 020 - 021 040 - 043 048 - 04B 060 - 06E 070 - 071 080 - 08F 0A0 - 0A1 0C0 - 0DF 1F0 - 1F7 220 - 22F 230 - 23F 240 - 24F 250 - 25F 278 - 27F 2E8 - 2EF 2F8 - 2FF 378, 37A 3BC - 3BE 3B4, 3B5, 3BA 3C0 - 3C5 3C6 - 3C9 3C0 - 3CF 3D0 - 3DF 3E0 - 3E1 3E8 - 3EF 3F0 - 3F7 3F8 - 3FF CF8 - CFFDMA controller-1 Interrupt controller-1 Timer 1 Timer 2 Keyboard controller 8742 chip select Real-time clock and NMI mask DMA page register Interrupt controller-2 DMA controller-2 Hard disk select Audio (option) - default Audio (option) Audio (option) Audio (option) Parallel port 3 COM 4 COM 2 Parallel port 2 Parallel port 1 Video subsystem Video subsystem Video DAC Enhanced graphics display Color graphics adapter PCMCIA controller COM3 Floppy disk controller COM 1 PCI configuration register
System Introduction1-11 1.4.5 Processor
Table 1-7Processor SpecificationsItemSpecificationCPU typeP55C-133/150/166CPU packageTCPSwitchable processor speed (Y/N)YesMinimum working speed0MHzCPU core voltage2.0V/2.45V/1.8VCPU I/O voltage2.5V/3.3V/2.5V1.4.6 BIOS
Table 1-8BIOS SpecificationsItemSpecificationBIOS vendorAcerBIOS versionV3.0BIOS in flash EPROM (Y/N)YesBIOS ROM size256KBBIOS package type32-pin PLCCSame BIOS for STN color/TFT color (Y/N)YesThe BIOS can be overwritten/upgradeable using the “AFLASH” utility
(AFLASH.EXE). Please refer to software specification section for details.1.4.7 System Memory
Memory is upgradeable from 8 to 64 MB, employing 8-/16-/32-/64-MB2
64-bit soDIMMs (Small
Outline Dual Inline Memory Modules). After installing the memory modules, the system
automatically detects and reconfigures the total memory size during the POST routines. The
following lists important memory specifications.
· Memory bus width: 64-bit
· Expansion RAM module type:144-pin, 64-bit, small outline Dual Inline Memory Module
(soDIMM)
· Expansion RAM module size/configuration:
· 8MB (1M*16x4)
2
You can upgrade memory using 32-MB soDIMMs when these become available. Consult your dealer.
1-12Service Guide· 16MB (2M*8x8) · 32MB (4M*16x4) · 64MB (8M*8x8) · Expansion RAM module speed/voltage/package: 60ns/3.3v/TSOP EDO · EDO and fast-page mode DIMMs may be used together in a memory configuration. The following table lists all possible memory configurations. Table 1-9Memory ConfigurationsSlot 1Slot 2Total Memory8 MB0 MB8 MB0 MB8 MB8 MB8 MB8 MB16 MB16 MB0 MB16 MB0 MB16 MB16 MB16 MB8 MB24 MB8 MB16 MB24 MB16 MB16 MB32 MB32 MB0 MB32 MB0 MB32 MB32 MB32 MB8 MB40 MB8 MB32 MB40 MB32 MB16 MB48 MB16 MB32 MB48 MB32 MB32 MB64 MB64MB0MB64MB0MB64MB64MB64MB8MB72MB8MB64MB72MB64MB16MB80MB16MB64MB80MB64MB32MB96MB32MB64MB96MB64MB64MB128MB1.4.8 Second-Level Cache This notebook has 256KB second-level (L2) cache onboard.
System Introduction1-13 1.4.9 Video Memory Table 1-10Video RAM ConfigurationItemSpecificationDRAM or VRAMDRAM(EDO type)Fixed or upgradeableFixedMemory size/configuration2MB (256K x 16 x 4pcs)Memory speed50nsMemory voltage3.3VMemory packageTSOP1.4.10 Video Table 1-11Video Hardware SpecificationItemSpecificationVideo chipC&T65555Working voltage3.3V1.4.10.1 External CRT Resolution Support Table 1-12Supported External CRT ResolutionsResolution x Color onExternal CRTCRT Refresh RateSimultaneous onTFT LCDSimultaneous onSTN LCDCRT onlySimultaneousSVGASVGA640x480x1660,75,8560YY640x480x25660,75,8560YY640x480x65,53660,75,8560YY640x480x16,777,21660,75,8560YY800x600x1656,60,75,8560YY800x600x25656,60,75,8560YY800x600x65,53656,60,75,8560YY800x600x16,777,21656,60,75,8560YY1024x768x1660,75,85,86I60YY1024x768x25660,75,85,86I60YY1024x768x6553660,75,85,86I60YY1280x1024x1660,75,86I60YY1280x1024x25660,75,86I60YY
1-14Service Guide1.4.10.2 LCD Resolution Support Table 1-13Supported LCD ResolutionsResolution x Color on LCD OnlyTFT LCD (SVGA)DSTN LCD (SVGA)640x480x16YY640x480x256YY640x480x65,536YY640x480x16,777,216YY800x600x16YY800x600x256YY800x600x65,536YY800x600x16777216YY1024x768x16YY1024x768x256YY1024x768x65536YY1280x1024x16YY1280x1024x256YY· Maximum resolution (External CRT): 1280x1024Using software, you can set the LCD to a higher resolution than its physical resolution, but the image shown on the LCD will pan. 1.4.11 Parallel Port Table 1-14Parallel Port ConfigurationsItemSpecificationNumber of parallel ports1ECP supportYes (set by BIOS setup)Connector type25-pin D-typeLocationRear sideSelectable parallel port (by BIOS Setup)· Parallel 1 (3BCh, IRQ7) · Parallel 2 (378h, IRQ7) · Parallel 3 (278h, IRQ5) · Disable
System Introduction1-15 1.4.12 Serial Port Table 1-15Serial Port ConfigurationsItemSpecificationNumber of serial ports116550 UART supportYesConnector type9-pin D-typeLocationRear sideSelectable serial port (by BIOS Setup)· Serial 1 (3F8h, IRQ4) · Serial 2 (2F8h, IRQ3) · Disable1.4.13 Audio Table 1-16Audio SpecificationsItemSpecificationChipsetYMF715Audio onboard or optionalBuilt-inMono or stereoStereoResolution16-bitCompatibilitySB-16 , Windows Sound SystemMixed sound sourcesVoice, Synthesizer, Line-in, Microphone, CDVoice channel8-/16-bit, mono/stereoSampling rate44.1 kHzInternal microphoneNoInternal speaker / quantityYes / 2 pcs.Microphone jackYesHeadphone jackYes1.4.14 PCMCIA PCMCIA is an acronym for Personal Computer Memory Card International Association. The PCMCIA committee set out to standardize a way to add credit-card size peripheral devices to a wide range of personal computers with as little effort as possible. There are two type II/I or one type III PC Card slots found on the left panel of the notebook. These slots accept credit-card-sized cards that enhances the usability and expandability of the notebook. ZV (Zoomed Video) port support allows your system to support hardware MPEG in the form of a ZV PC card.
1-16Service GuideTable 1-17PCMCIA SpecificationsItemSpecificationChipsetTI 1250ASupported card typeType-II / Type-IIINumber of slotsTwo Type-II or one Type-IIIAccess locationLeft sideZV (Zoomed Video) port supportYes1.4.15 Touchpad Table 1-18Touchpad SpecificationsItemSpecificationVendor & model nameSynaptics TM3202TPD-226Power supply voltage (V)5 ± 10%LocationPalm-rest centerInternal & external pointing device work simultaneouslyYesSupport external pointing device hot plugYesX/Y position resolution (points/mm)20InterfacePS/2 (compatible with Microsoft mouse driver)1.4.16 Keyboard Table 1-19Keyboard SpecificationsItemSpecificationVendor & model nameSMK KAS1901-0161R (English)Total number of keypads84/85 keysWindows 95 keysYes, (Logo key / Application key):Internal & external keyboard work simultaneouslyYes
System Introduction1-17 1.4.16.1 Windows 95 Keys The keyboard has two keys that perform Windows 95-specific functions. See Table 1-26. Table 1-20Windows 95 Key DescriptionsKeyDescriptionWindows logo keyStart button. Combinations with this key performs special functions, e.g.: · Windows + Tab Activate next Taskbar button · Windows + E Explore My Computer · Windows + F Find Document · Windows + M Minimize All · Shift + Windows + M Undo Minimize All · Windows + R Display Run dialog boxApplication keyOpens the application’s context menu (same as right-click).1.4.17 FDD Table 1-21FDD SpecificationsItemSpecificationVendor & model nameMitsumi D353F2Floppy Disk SpecificationsMedia recognition2DD (720K)2HD (1.2M, 3-mode)2HD (1.44M)Sectors / track91518Tracks808080Data transfer rate (Kbits/s)250300500500Rotational speed (RPM)300360360300Read/write heads2Encoding methodMFMPower RequirementInput Voltage (V)+5 ± 10%
1-18Service Guide1.4.18 HDD Table 1-22HDD SpecificationsItemSpecificationVendor & Model NameHitachi DK225A-21IBM DTNA22160IBM DDLA21620Drive FormatCapacity (MB)216021601620Bytes per sector512512512Logical heads161616Logical sectors636363Logical cylinders488942003152Physical read/write heads663Disks332Spindle speed (RPM)446440004000Performance SpecificationsBuffer size (KB)1289696InterfaceATA-3(IDE)ATA-2ATA-2Data transfer rate (disk-buffer, Mbytes/s)5.7 ~ 9.05 ~ 7.75 ~ 8.3Data transfer rate (host-buffer, Mbytes/s)16.6 /33.3 (max., PIO mode 4)16.6 (max., PIO mode 4)16.6 (max., PIO mode 4)DC Power RequirementsVoltage tolerance (V) 5 ± 5%5 + 5% 5 ± 5%1.4.19 CD-ROM Table 1-23CD-ROM SpecificationsItemSpecificationVendor & Model NamePanasonic KMEUJDA110Performance SpecificationSpeed (KB/sec)2100 (14X ave. speed)Access time (ms)150 (Typ.)Buffer memory (KB)128InterfaceEnhanced IDE (ATAPI) compatibleApplicable disc formatCD-DA, CD-ROM, CD-ROM XA (except ADPCM), CD-I, Photo CD (Multisession), Video CD, CD+Loading mechanismSoft eject (with emergency eject hole)Power RequirementInput Voltage (V)5