Posted By
JamesC
on 2004-04-23
07:51:02
|  Re: Another Plus/4 question...
Paul,
TED requires that the character set be on a 2k boundary. I calculate the highest spot to be $F000; anything higher will conflict with the modem and DMA ports.
If you're going to MOVE the character set, you also need to tell TED the new location by POKEing the high byte to 65299. Be careful when doing this, as the lowest two bits are used for other purposes and should not be messed with. Only the upper 6 bits hold the character base.
My suggestion for putting the RAM-based characters at 53248 was for simplicity. As someone in comp.sys.cbm pointed out, you could simply use a GRAPHIC1:GRAPHIC0 to reserve RAM and put your character set in that 12k block.
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