As known, the MZ-700 has two character sets, each having 256 characters.
Both character sets reside in one ROM chip having a capacity of 4 kb.
If you compute:
Knowing the following is important for designing your own character
set(s) and for programming the PCG700:
|PCG-AID screen structure|
1 This area ( red ) is the 8 x 8 dot matrix for the editing of a character selected by a command.
2 This area ( green ) shows all 128 characters of a page selected by a command. You can edit each character within this page to create new characters or modify the character(s) you want. You can copy the upper 128 characters of the CG-ROM into this area or you can load any own character sets into this area for modifying. At the end of your work you can save all to tape.
3 "128" is the character's code just in work and the star ( violet ) points to this character. This character can be edited if it is fetched by a command into the editable matrix as shown by (1) ( red area ). The star can be set to any character within the green area by the cursor keys.
4 This informs you which RAM ( RAM0 / RAM1 ) you have selected for editing. RAM0 is the first and RAM1 is the second character set of the PCG700.
5 This informs you which page ( 0 - 3 ) within the RAM0 you have selected for editing. These pages do not really exist in the PCG700. They are work areas of this utility and for you only.
6 This informs you which page ( 0 - 3 ) within the RAM1 you have selected for editing. These pages do not really exist in the PCG700. They are work areas of this utility and for you only.
7 This informs you from which part of the CG-ROM you can select characters ( Lo = ROM0 / Hi = ROM1 ) for editing. ROM0 is the first and ROM1 is the second character set of the MZ-700.
8 Command line of the MZ-700 monitor.
The PCG-AID utility can be controlled by several commands. The following table shows all commands, the associated function, and the screen area which will be effected by the function of a command.
Download the Japanese version of the PCG-AID utility ( 3 kb zipped ).
Download the European version of the PCG-AID utility ( 3 kb zipped ).
The first character set in the PCG-AID utility is located from $0841 to $0C40 and the 2nd character set from $0C41 to $1040. These values include the tape header in the length of $80 ! and the character sets are not mirrored. Both character sets within the PCG-AID utility contain the upper 128 characters only.
( Special thanks to Hideki / Japan for the translations from the PCG700 Manual )