Table of Contents
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REV.-A
00: Boot(RAM check)
Select this mode to check the RAM. When this mode is selected, the CPU resets the external system.
01: Switch check
Select this mode to check the switches on the control panel. When a switch is pressed, the name of
the switch is displayed on the LCD panel. To exit this mode, press the ON-LINE switch.
02: LCD(LCDC) check
Select this mode to check the functions of the LCD controller (LCDC) mounted on the control panel
board. All the characters that are defined in the LCDC are displayed.
To exit this mode, press the ON-LINE switch.
03: Panel LED check
When this mode is selected, all the LEDs on the control panel blink. To exit this mode, press the ON-LINE
switch. Note that the POWER LED does not turn off.
04:
Program ROM check
Use this mode to check the ROM in the diagnostic ROM cartridge.
When this is selected, the read address and data from the ROM is displayed on the LCD.
When the checksum is displayed at the end of this check, compare it with the correct value. They should
both match.
To exit this mode, press the ON-LINE switch.
I
AD=xxxx BK=OO DT=xx
I
AD : read address
BK : bank number(ln this mode, BK is always 00)
DT : read data
05:
CGO/10B ROM check
Use this mode to check the CG ROM (IC 1OB).
When this is selected, a menu is displayed for selecting the CGROM capacity as follows;
Select CG ROM size
FF:up LF:down L/E:set
CG ROM size = 4M bit
Switch explanation.
Select CGROM size (256K, 1M,2MAM bit)
Select the CGROM size (256K, 1M,2MAM) by pressing 'FF or 'LF, and press 'LIE' to start the check.
The address and data read from the CGROM are displayed on the LCD.
When the checksum is displayed at the end of the check, compare it with the correct value.
To exit this mode, press the ON-LINE switch.
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