Ampro Corporation 486E Byte-Wide Socket Configuration, Serial Boot Loader Enable, Size Address

Little Board™/486e Technical Manual

Byte-Wide Socket Configuration

The byte-wide socket, S0 can be configured for its starting address and the size of the memory block in which it appears to the processor, or it can be disabled. Whether or not the socket should be enabled during the boot process can also be specified.

Table 2–58 lists the socket address configuration options that are available.

Table 2–58. Byte-Wide Socket Configuration

Size	Address
Disabled	None
64K bytes	D0000h – DFFFFh
64K bytes	E0000h – EFFFFh
128K bytes	D0000h – EFFFFh

Ampro provides several extended BIOS function calls that allow software control of the byte wide socket state such as:

!Enable/disable

!Programming control for flash EPROMs

Contact Ampro Technical Support for additional information regarding these services.

Hardware jumpers can also be set to configure the byte-wide socket for any device installed in S0. Jumper positions are provided earlier in this chapter.

The byte wide socket has no hardware provisions for paging large memory devices, and is not recommended for SSD (64K byte maximum).

Serial Boot Loader Enable

This parameter enables or disables the Serial Boot Loader option in the Ampro ROM BIOS. The serial boot loader allows booting from either of the onboard serial ports much in the same way you would boot from a local hard disk or from a LAN. A description of the Serial Boot Loader is provided in the Ampro Common Utilities manual (see SERLOAD and SERPROG). If the Serial Boot Loader is used, set this parameter to Enabled.

Watchdog Timer Configuration

This parameter allows the time duration of the watchdog timer to be set for monitoring the boot process. It can be set to 30, 60, or 90 seconds, or it can be disabled. A description of the related WATCHDOG utility program can be found in the Ampro Common Utilities manual.

Local Bus Video Display

If you will be using a CRT display, select CRT. If you will be using a flat panel display, select FP. If you will be using both types of display, select FP&CRT. If you select FP or FP&CRT, select a flat panel display type (see below).

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