Adding Eirik's flash tools (#49)

* Adding Eirik's flash tools

* Fix copyright notice

tools/SMCBLD2.BAS

@@ -0,0 +1,36 @@
+5 REM COPYRIGHT 2024 EIRIK STOPLE
+10 PRINT "DUMP SMC FLASH TO $7E00-$7FFF"
+20 OFFSET=$1E00
+21 RAM=$7E00
+24 REM SET SMC PAGE TO BOOTLOADER (120)
+25 I2CPOKE $42,$90,120
+30 REM START A NEW LINE
+40 IF OFFSET < 256 THEN PRINT "00";
+50 PRINT HEX$(OFFSET) " ";
+60 FOR I=0 TO 15
+65 BYTE=I2CPEEK($42,$91)
+68 POKE RAM,BYTE
+70 PRINT " " HEX$(BYTE);
+80 RAM=RAM+1
+90 NEXT
+100 PRINT " "
+110 OFFSET = OFFSET + 16
+120 IF OFFSET < 8192 GOTO 40
+125 GOSUB 1000
+130 PRINT "DUMPED TO $7E00-$7FFF"
+140 PRINT "DUMP TO SD CARD WITH THE COMMAND"
+150 PRINT "BSAVE " CHR$($22) "DUMPSMC.BIN" CHR$($22) ",8,1,$7E00,$7FFF"
+160 END
+1000 REM COMPUTE AND EVALUATE CHECKSUM FROM 7E00 TO 7FFF
+1010 POKE 2,0
+1020 POKE 3,$7E
+1030 POKE 4,0
+1040 POKE 5,2
+1050 SYS $FEEA
+1060 CRC16 = PEEK(7) * 256 + PEEK(6)
+1070 PRINT "CRC-16: $" HEX$(CRC16) " ";
+1080 IF CRC16 = $19B5 THEN PRINT "BOOTLOADER V1":RETURN
+1090 IF CRC16 = $15C7 THEN PRINT "BOOTLOADER V2":RETURN
+1100 IF CRC16 = $7594 THEN PRINT "BOOTLOADER V2 (BAD)":RETURN
+1110 IF CRC16 = $6995 THEN PRINT "BOOTLOADER MISSING":RETURN
+1120 PRINT "CRC-16 NOT RECOGNIZED":RETURN

tools/SMCBLW16.BAS

@@ -0,0 +1,75 @@
+5 COPYRIGHT 2024 EIRIK STOPLE
+10 A$ = "BOOT2.BIN"
+20 PRINT "BOOTLOADER PROGRAMMER FOR SMC"
+30 PRINT "SELECTED FILE: " CHR$($22) A$ CHR$($22)
+40 BLOAD A$,8,1,$7C00
+50 OFFSET=$1E00
+60 RAM=$7C00
+70 REM START A NEW LINE
+80 PRINT HEX$(OFFSET) " ";
+90 FOR I=0 TO 15
+100 BYTE=PEEK(RAM)
+110 PRINT " " HEX$(BYTE);
+120 RAM=RAM+1
+130 NEXT
+140 PRINT " "
+150 OFFSET = OFFSET + 16
+160 IF OFFSET < 8192 GOTO 80
+170 REM COMPUTE AND EVALUATE CHECKSUM FOR $7C00-$7DFF
+180 POKE 2,0
+190 POKE 3,$7C
+200 POKE 4,0
+210 POKE 5,2
+220 SYS $FEEA
+230 CRC16 = PEEK(7) * 256 + PEEK(6)
+240 PRINT "CRC-16: $" HEX$(CRC16) " ";
+250 GOSUB 1000
+260 PRINT "PROCEED WITH PROGRAMMING? YES / NO / CHANGE FILE"
+270 INPUT "Y/N/C"; B$
+280 IF B$ = "C" GOTO 310
+290 IF B$ = "Y" GOTO 2000
+300 END
+310 INPUT "FILE"; A$
+320 GOTO 30
+1000 REM EVALUATE CHECKSUM
+1010 IF CRC16 = $19B5 THEN PRINT "BOOTLOADER V1":RETURN
+1020 IF CRC16 = $15C7 THEN PRINT "BOOTLOADER V2":RETURN
+1030 IF CRC16 = $7594 THEN PRINT "BOOTLOADER V2 (BAD)":RETURN
+1040 IF CRC16 = $6995 THEN PRINT "BOOTLOADER MISSING":RETURN
+1050 PRINT "CRC-16 NOT RECOGNIZED":RETURN
+2000 REM CHECK IF FLASH MANIPULATION IS ACTIVATED
+2010 IF I2CPEEK($42,$93) = 1 GOTO 3000
+2020 IF I2CPEEK($42,$93) <> 0 THEN PRINT "SMC VERSION NOT SUPPORTED":END
+2030 PRINT "FLASH MANIPULATION REQUIRES UNLOCKING USING BUTTON COMBINATION."
+2040 PRINT "BUTTONS: POWER + RESET"
+2050 PRINT "BUTTONS MUST BE PRESSED WITHIN A 20 SECOND TIMEOUT."
+2060 INPUT "ARE YOU READY? Y/N"; B$
+2070 IF B$ <> "Y" THEN END
+2074 I2CPOKE $42,$93,1
+2075 TM = 20
+2080 PRINT TM
+2090 SLEEP 60
+2091 IF I2CPEEK($42,$93) = 1 GOTO 3000
+2100 TM = TM - 1
+2110 IF TM > 0 GOTO 2080
+2120 GOTO 2000
+3000 INPUT "SMC READY FOR PROGRAMMING. START PROGRAMMING? Y/N"; B$
+3010 IF B$ <> "Y" GOTO 9000
+4021 RAM=$7C00
+4024 REM SET SMC PAGE TO BOOTLOADER (120)
+4025 I2CPOKE $42,$90,120
+4065 BYTE=PEEK(RAM)
+4068 I2CPOKE $42,$92,BYTE
+4080 RAM=RAM+1
+4090 IF RAM < $7E00 GOTO 4065
+4100 PRINT "READ FLASH AND VALIDATE CONTENTS"
+4110 REM SET SMC PAGE TO BOOTLOADER (120)
+4120 I2CPOKE $42,$90,120
+4130 RAM=$7C00
+4140 IF I2CPEEK($42,$91) <> PEEK(RAM) THEN PRINT "VERIFY FAILED":GOTO 3000
+4150 RAM=RAM+1
+4160 IF RAM < $7E00 GOTO 4140
+4170 PRINT "PROGRAMMING SUCCEEDED"
+9000 REM LOCK SMC, WILL ALSO ENABLE POWER BUTTON AGAIN
+9010 I2CPOKE $42,$93,0
+9020 END