Epson Equity LT Product Support Bulletin(s) - Page 24

Q39. A. What are the differences in GW-BASIC 3.20 between the Equity LT and other desktop computers? The version of GW-BASIC provided with the LT is the same version supplied with the Equity + series PCs. However, due to the fundamental differences between a desktop and a laptop PC, certain GW-BASIC commands and functions do not apply to the LT. Specifically, the LT doesn't support commands that control: - Hercules and EGA - A joystick - A light pen - Networking - More than one parallel port - An enhanced (101-key) keyboard Q40. A. What does the LIGHTON command do? If you have set the backlight period, the EL element turns off after the specified amount of time. Pressing any key calls the LT's ROM BIOS keyboard routine, which re-activates the EL element. However, if a keyboard driver (such as KEYBxx) is loaded, the BIOS keyboard routine is bypassed. This can also occur with certain terminate-andstay-resident (TSR) programs. LIGHTON will trap the keystroke and invoke the BIOS keyboard routine long enough to activate the EL element, then return control to the driver or TSR. Be sure and load LIGHTON after you load the driver or TSR; the order is very important. Q41. A. Can I run OS/2 on my LT? No. OS/2 requires a minimum of an 80286 CPU and 1.5 MB of RAM. The LT uses an NEC V30 CPU, which is 8086-compatible, and provides a maximum of 640 KB of RAM. Q42. A. If an application requires you to select a monitor type in the installation procedure, which choice should I make for the LT? The LCD display of the LT emulates the CGA (Color Graphics Adapter) standard. You should choose that option. Also, some applications let you select "no color" or "single color" for the CGA implementation - this may make the display easier to read, Finally, some applications (such as Sidekick Plus) have an option like "Black and White (for Portables)". If so, you should select this option. Equity LT - Common Questions and Answers - Page 9 of 9