Lenovo Ispirati 2001 User's Guide - Ispirati 2001 (6300) (English) - Page 39

4-8 Chapter 4: BIOS Setup Item SDRAM Cycle Time Tras/Trc SDRAM RAS-to-CAS Delay SDRAM RAS Precharge Time System BIOS Cacheable Video BIOS Cacheable Memory Hole At 15M-16M CPU Latency Timer Delayed Transaction OnChip Video Window Size Local Memory Frequency Initial Display Cache CAS# Latency Paging Mode Control RAS-to-CAS Override RAS# Timing RAS# Precharge Timing Options 5/7 6/8 3 2 3 2 Enabled Disabled Disabled 15M-16M Enabled Disabled Enabled Disabled -- 100Mhz 133MHz Enabled Disabled 2 3 Close Open By CAS# LT Override(2) Slow Fast Slow Fast Description Specifies the timing spec of SDRAM. This item specifies the length of the delay inserted between RAS(Row Address Strobe)and CAS(Column Address Strobe) signal of the DRAM system memory access cycle. This item specifies the length of the RAS precharge part of the DRAM system memory access cycle when synchronous DRAM system memory is installed in the computer. If cache controller is enabled, enabling these causes video BIOS cache at C0000H-C7FFFH or system BIOS ROM at F0000H-FFFFFH to be cached for faster execution. 'Enabled' makes 15M-16M area reserved for ISA use. (Some ISA cards may require specific areas of memory in order to function.) Enables or disables this feature. Selects ISA device speed. 'Enabled' is for slow speed ISA device in system. Displays the window size of video controller. Sets display cache at 100Mhz or 133MHz. The onboard video includes a 4MB onboard display cache. 'Enabled' utilizes this cache. This item regulates the column address strobe. Sets the Paging mode control when 'Initial Display Cache' is enabled. Specifies the interval between refresh signals to DRAM system memory when 'Initial Display Cache' is enabled. Regulates the speed of row address strobe when 'Initial Display Cache' is enabled. Sets the precharge timing of row address strobe when 'Initial Display Cache' is enabled.