Specifications

Software Configuration
3–3
3.3 SETUP PAGE 1—STANDARD (CMOS) SETUP
The first SETUP page contains the parameters normally saved in CMOS RAM plus some additional
parameters unique to the Little Board/486i. The only parameters not also saved in the EEPROM memory
are the real-time clock date and time. If no battery is used or if the battery fails, the date and time will not
be accurate. All other parameters are saved in the EEPROM.
The following figure shows what can be configured from SETUP page 1. Sections following the figure
describe each option.
Figure 3-1 SETUP Page 1
3.3.1 Date and Time
The time shown on the screen is continuously updated by the SETUP function and reflects the current
state of the hardware real-time clock. The new time that you enter is immediately written to the device.
Enter the date in the form mm/dd/yy. Enter the time in 24-hour format, in the form hh:mm:ss.
The ROM BIOS maintains the system real-time clock. It is incremented approximately 18.2 times per
second by an interrupt from timer/counter 0. The ROM BIOS automatically initializes the system real-time
clock from the hardware real-time clock upon system reset or powerup.
3.3.2 Floppy Drives
The ROM BIOS supports all of the popular DOS-compatible floppy disk formats. This includes all the 5-
1/4 inch and 3-1/2 inch floppy formats—360K, 720K, 1.2M, and 1.44M. (Note that some formats are not
supported by early versions of DOS.) In addition, the ROM BIOS supports dual capacity use of high