Mode d'emploi AOPEN P5TCAQ

[. . . ] This may result in unreliable system once the cache module and slot becomes worn. All AOpen MBs support 512KB PBSRAM onboard. For better performance (around 3% higher than 256KB), we strongly recommend you to use 512KB onboard. Otherwise, reliable 256KB is better than unreliable 512KB with cache module. [. . . ] But unfortunately, the new generation CPU and chipset use 3. 3V or 2. 8V voltage which has regulator to transfer 5V to 3. 3V/2. 8V, and makes 5V over-current protection useless. AOpen TX mainboard AP5T/AX5T with switching regulator onboard support 3. 3V (Vcpuio, chipset, PBSRAM, SDRAM) and 2. 8V (CPU Vcore) over-current protection, in conjunction with 5V/12V power supply provide the full line over-current protection. A: The higher speed of CPU , the more heat dissipation need to be taking into consideration. If user does not use correct fan for the CPU cooling, it is highly possible the CPU can over heat and causing system unstable. AOpen AP5T/AX5T/AX6F has special thermal detection circuit under the A-3 Frequently Asked Questions CPU, and slow down the CPU speed as well as warning when temperature is high then a predefined temperature. (Normally, 55 degree C. ) Q: What is the Ultra DMA/33?A: This is the new specification to improve IDE HDD data transfer rate. Unlike traditional PIO mode, which only uses the rising edge of IDE command signal to transfer data, the DMA/33 uses both rising edge and falling edge. Hence, the data transfer rate is double of the PIO mode 4 or DMA mode 2. The following table lists the transfer rate of IDE PIO and DMA modes. The IDE bus is 16-bit, which means every transfer is two bytes. Mode Clock per 33MHz PCI 30ns 30ns 30ns 30ns 30ns 30ns 30ns 30ns 30ns Clock count 20 13 8 6 4 16 5 4 4 Cycle time 600ns 383ns 240ns 180ns 120ns 480ns 150ns 120ns 120ns Data Transfer rate PIO mode 0 PIO mode 1 PIO mode 2 PIO mode 3 PIO mode 4 DMA mode 0 DMA mode 1 DMA mode 2 DMA/33 (1/600ns) x 2byte = 3. 3MB/s (1/383ns) x 2byte = 5. 2MB/s (1/240ns) x 2byte = 8. 3MB/s (1/180ns) x 2byte = 11. 1MB/s (1/120ns) x 2byte = 16. 6MB/s (1/480ns) x 2byte = 4. 16MB/s (1/150ns) x 2byte = 13. 3MB/s (1/120ns) x 2byte = 16. 6MB/s (1/120ns) x 2byte x2 = 33MB/s A-4 Frequently Asked Question Q: What is the performance of Ultra DMA/33?A: You need driver to activate DMA/33, there are now driver from INTEL or you can use driver in the Windows 95 Memphis, which can recognize South Bridge PIIX4. We got the mass production sample Quantum Fireball ST1. 6A, following are the test result. MB CPU DRAM VGA CDROM OS Model OS/Driver : AOpen AP5T : P54C-200 Mhz : 16MB * 2 (FP-7) : AOpen PV60 : AOpen CD-920E (20X) : Win95 OSR2 Mode Winbench97 Disk Winmark (Business) 717 Winbench97 Disk Winmark (High End) 2150 Quantum Fireball 1. 2G Quantum Fireball 1. 2G Quantum ST1. 6A Quantum ST1. 6A Windows 95 OSR2 Windows 95 OSR2 + INTEL PIIX4 driver Windows 95 OSR2 Windows 95 OSR2 + INTEL PIIX4 driver PIO mode 4 DMA mode 2 822 3050 PIO mode 4 DMA/33 853 1040 2630 4020 A-5 Frequently Asked Questions Q: What is the memory performance improvement of TX chipset?A: Following is the compare table of TX+SDRAM, VX+SDRAM, TX+EDO, HX+EDO and VX+EDO. CPU DRAM HDD VGA OS Chipset Intel 430VX Intel 430HX Intel 430TX Intel 430VX Intel 430TX : Pentium PP/MT (P55C) 200MHz :16MB EDO or SDRAM : Quantum Fireball 1280AT : AOpen PV60 S3 Trio64V+ 800x600x256 Small font : Windows 95 OSR2 Model AP5VM AP53/AP5K AP5T/AX5T AP5VM/AP5V AP5T/AX5T DRAM EDO EDO EDO SDRAM SDRAM Timing 6-2-2-2 5-2-2-2 5-2-2-2 6-1-1-1 5-1-1-1 Winstone9 6 86. 1 86. 8 87. 3 86. 6 87. 7 Q: Power Management Icon does not appear in the Windows 95 Control Panel even though the APM under BIOS Setup is enabled. A: This problem occurs if you did not enable the APM function before you install Windows 95. If you have already installed Windows 95, re-install it after the BIOS APM function is enabled. A-6 Frequently Asked Question Q: Why does the system fail to go into suspend mode under Win95?A: This problem may be caused by your CDROM settings. The CDROM Auto Insert Notification of Win95 is dafault enabled, the system will continue to monitor your CDROM, auto-execute application when a CD diskette is loaded, and prevents the system from entering into suspend mode. To resolve this, go into Control Panel è System è Device Manager è CDROM è Setting, and disable the "Auto Insert Notification" function. [. . . ] Look for "System" heading & refer to following, 4. 00. 950 4. 00. 950A 4. 00. 950B Windows 95 Windows 95 + Service Pack or OEM Service Release 1 OEM Service Release 2 or OEM Service Release 2. 1 If you are running OSR 2. 1, you may tell it from by checking "USB Supplement to OSR2" in the list of installed program of Add/Remove program tool under Control Panel, and checking for version 4. 03. 1212 of the Ntkern. vxd file in the Windows\System\Vmm32 folder. Q: What is LDCM (LAN Desktop Client Manager)?The major goal is to provide an easy way for corporate network administrator to monitor the status of all the clients (workstation). AOpen BIOS is also DMI ready but unfortunately, Intel LDCM needs Intel network card to work properly. [. . . ]