Apple-2-HW/Apple2-IO-RPi
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Add source for updating firmware (also on drive image)

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Terence Boldt 2021-05-19 08:55:47 -04:00
parent 6b322f11ca
commit 83eeab1961
1 changed files with 26 additions and 0 deletions
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Apple2/Update.Firmware.bas Normal file
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10 HOME
100 PRINT CHR$ (4)"BLOAD AT28C64B.BIN,A$2000"
200 PRINT "Program the firmare in slot #"
300 INPUT SL
400 FW = 8192 + 256 * SL: REM Firmware source
500 PS = 49287 + SL * 16: REM Firmware page selection
600 EP = 49152 + SL * 256: REM EPROM location
900 HOME
1000 FOR PG = 0 TO 3
1004 PRINT : PRINT
1005 PRINT "Writing page "PG" to slot "SL"
1006 PRINT "_______________________________________"
1007 PRINT "_______________________________________";
1008 HTAB 1
1010 POKE PS,PG * 16 + 15: REM Set firmware page
1020 FOR X = 0 TO 255
1030 A = PEEK (FW + PG * 2048 + X)
1040 POKE EP + X,A
1041 B = PEEK (EP + X)
1042 IF (B < > A) THEN GOTO 1041
1045 HTAB (X / 256) * 39 + 1
1046 INVERSE : PRINT " ";: NORMAL
1050 NEXT X
1060 NEXT PG
1900 PRINT
2000 PRINT "Firmware Update Complete"