TI-58C Clone

[Pierre]

(11-30-2024 01:37 PM)Marc van Lemmen Wrote:  No luck with the ICSP yet, I'm working on it. But in the meantime I was changing my Game of Life ( for the TI-59 with PC-100 ) to work on the ET-58 ( with the plot function, Op 4D,4,E,4F), and I stumbled onto something strange with y. I assume that the lower left corner should be 0,0, but when I plot a point at 0,0 it appears at 0,2. to plot at 0,0 I have to use 0,2 instead.
To plot on the right y value I have to use the following table: 0 -> 2, 1 -> 1, 2 -> 0, 3 -> 5, 4 -> 4 and 5 -> 3. The x value works as expected. Is it possible for you to check if your ET-58 does the same ?

For [OP] [4D],[OP] [4E],[OP] [4F] :
The screen is composed of 2 lines of 15 characters.
The columns are numbered from 0 to 15 (X register)
The lines are divided into 3 rectangles numbered from 3 to 5 for the upper line and from 0 to 2 for the lower line. (T register)
So: