With Cartridge BASIC is is possible to peek to different areas of the PCjr from BASIC? I want to read E0000
I have been playing with an eprom burner and a reproduction JR cart pcb. If I burn some text to an eprom and put it in the second socket on the cartage I have I can see the text in dos DEBUG with "d E000:0000"
The cart puts my eprom at E0000. In decimal that is 917504 which is more then 65535 so I can't just PEEK to it.
PEEKing to other memory segments past 64k?
Re: PEEKing to other memory segments past 64k?
You want to use the DEF SEG statement. DEF SEG is used to define the segment that PEEK will work off of.
For example:
100 DEF SEG=&HB800
110 POKE 0,65
That sets the active segment to the CGA video buffer, allowing the POKE to modify the video buffer contents.
For example:
100 DEF SEG=&HB800
110 POKE 0,65
That sets the active segment to the CGA video buffer, allowing the POKE to modify the video buffer contents.
Re: PEEKing to other memory segments past 64k?
Thanks! That is what I was missing. I have only ever messed with basic on 8bit micro's like the trs80 so I never had a need to look past 64k 
Now I can scroll the text I burned to the eprom with:
1 DEF SEG=&HE000
10 FOR A = 1 TO 65534
20 B = PEEK(A)
30 PRINT CHR$(B);
40 NEXT A
Now I can scroll the text I burned to the eprom with:
1 DEF SEG=&HE000
10 FOR A = 1 TO 65534
20 B = PEEK(A)
30 PRINT CHR$(B);
40 NEXT A