There’s a short type in programme on this page for checking if a bank is ROM or RAM on the B+, if it’s of any help. https://www.firths.org/bbc/my_b+128k.html
Code:
10FOR pass=0 TO 2 STEP 2 20P%=&900 30[OPTpass 40.writeram 50TAY:LDA &F4:PHA 60TXA 70STA &F4:STA &FE30 80TYA:LDY #0 90STA (&70),Y 100PLA 110STA &F4:STA &FE30 120RTS 130.readrom 140LDA &F4:PHA 150TXA 160STA &F4:STA &FE30 170LDY #0 180LDA (&70),Y 190TAY 200PLA:STA &F4:STA &FE30 210TYA 220RTS 230] 240?&70=&FF:?&71=&BF 250space$=" " 260FOR rom%=15 TO 0 STEP -1 270X%=rom% 280A%=USR readrom AND &FF 290A%=A%EOR&FF 300CALL writeram 310B%=USR readrom AND&FF 320IF B%<>A% GOTO400 330A%=A%EOR&FF 340CALL writeram 350B%=USR readrom AND&FF 360IF B%<>A% GOTO400 370PRINT "Location"+LEFT$(space$,3-LEN(STR$(rom%)))+STR$(rom%)+" is"+CHR$130+"RAM" 380NEXT 390END 400PRINT "Location"+LEFT$(space$,3-LEN(STR$(rom%)))+STR$(rom%)+" is"+CHR$129+"ROM" 410NEXTStatistics: Posted by rmbrowngr — Wed Jan 29, 2025 7:55 pm