Contents
AI5TT Pentium Baby AT Motherboard User’s Manual i
Contents
Chapter 1 Introduction..................................................1
Chapter 2 Specifications ................................................2
Chapter 3 Hardware Description..................................5
3.1 Processor and CPU Voltage....................................................7
3.2 L2 Cache Memory..................................................................7
3.3 Main Memory ........................................................................7
3.4 BIOS......................................................................................9
3.5 Interrupt Request Lines (IRQ).................................................9
3.6 DMA Channels ....................................................................10
3.7 I/O Port Address Map...........................................................10
3.8 Onboard PCI EIDE...............................................................11
3.9 Onboard Multi-I/O ...............................................................11
3.10 System Hardware Monitor Device (optional) ......................11
Chapter 4 Configuring the AI5TT...............................12
4.1 SW1 (1-4), JP16, JP17: CPU Frequency Selector..................14
4.2 SW1 (5-8): CPU Voltage Selector ........................................17
4.3 JP19: Clear CMOS Content..................................................19
4.4 J15: External Battery Connector...........................................19
Chapter 5 Installation..................................................20
5.1 J1: AT Power Connector ......................................................22
5.2 J3: ATX Power Supply Connector........................................22
5.3 J4, J8: AT Keyboard and PS/2 Mouse Connectors.................24
5.4 J6, J7: USB Connectors........................................................24
5.5 J9, J10: Serial Ports..............................................................26
5.6 J11: Floppy Drive Connector................................................26
5.7 J12, J14: IDE Connectors .....................................................28
5.8 J13: Parallel Port Connector .................................................30
5.9 J17: Chassis Fan Power Connector .......................................30
5.10 J18: CPU Fan Power Connector..........................................30
5.11 J19: Infrared Connector......................................................32
5.12 J20: Front Bezel Connectors...............................................32
