Acer Veriton 2800 Veriton 2800 Service Guide - Page 58

. Checkpoint 03h 04h 05h 06h 07h 08h 09h 0Ah 0Bh 0Ch 0Dh 0Eh 0Fh 10h 11h 12h 13h 14h 15h 16h 17h 18h 19h 1Ah 1Bh 1Ch 1Dh 1Eh 1Fh 20h 21h 22h Description Initial Superio_Early _Init switch Reserved 1. Blank out screen 2. Clear CMOS error flag Reserved 1. Clear 8042 interface 2. Initialize 8042 self-test 1. Test special keyboard controller for Winbond 977 series Super I/O chips. 2. Enable keyboard interface. Reserved 1. Disable PS/2 mouse interface (optional) 2. Auto detect ports for keyboard & mouse followed by a port & interface swap (optional). 3. Reset keyboard for Winbond 977 series Super I/Q chips. Reserved Reserved Reserved Test F000h segment shadow to see whether it is R/W-able or not. If test fails, keep beeping the speaker. Reserved Auto detect flash type to load appropriate flash R/W codes into the run time area in F000 for ESCD & DMI support. Reserved Use walking 1's algorithm to check out interface in CMOS circuitry. Also set realtime clock power status, and then check for override. Reserved Program chipset default values into chipset. Chipset default values are MODBINable by OEM customers. Reserved Initial Early_Init_Onboard_Generator switch. Reserved Detect CPU information including brand, SMI type (Cyrix or Intel) and CPU level (586 or 686) Reserved Reserved Initial interrupts vector table. If no special specified, all H/W interrupts are directed to SPURIOUS_INT_HDLR & S/W interrupts to SPURIOUS_soft_HDLR. Reserved Initial Early_PM_INIT switch. Reserved Load keyboard matrix (notebook platform) Reserved HPM initialization (notebook platform) Reserved Chapter 4 51