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In the normal development of any project or design there are changes before the next version is complete. This list applies to the board design variations.
ORDERING BOARDS
The zip file has four boards on the layout.
The student special is $33 regardless of whether the board is 1" x 1" or 60sq in.
With
four boards on the layout, there is a $55 array charge.
The layout is 6"h X 10"w.
So ordering an array of 4 and paying $88 is still a much
better deal than ordering one for $33. Four of you can
order together if you want to save a few $$.
1. The code for the LCD routine has one little hook. The DPTR is used in two ways. As the first instruction in ScrData save DPH & DPL the recover them just before the return mov scrhi,dph mov scrlo,dpl .................... mov dph,scrhi mov dlp,scrlo
2. The big keypad program works fine. There is a challenge with the shorter one.
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