ここらへんを参考にぴゅう太のフラッシュメモリライタープログラムを作ってみました。
http://p6ers.net/mm/pc-6001/dev/flashromcard/32k_write.html
ぴゅう太(8000-BFFF)から見ると256KBフラッシュメモリ(00000-3FFFF)は16KB(00000-03FFF)なので、20KB(0000-4FFF)のBIOSをDUMPするには前半(0000-1FFF)、後半(2000-4FFF)で2回実行する必要があります。
http://www.geocities.jp/parallel_computer_inc/pyutabios.zip
*************************************************************** * * FLASH MEMORY WRITER for PYUTA * * 2016/02/20 written by TANAM * ********@*****@*********************@************************** AORG >8000 *************************************************************** * HEADER *************************************************************** DATA >5555 * GAME CARTRIDGE HEADER b @START * GOTO MAIN *************************************************************** * SUB *************************************************************** FLASH_WRITE limi 0 li R4,>9000 li R9,>0000 * li R9,>2000 li R15,>2000 * li R15,>3000 WR_LOOP li R5,>8555 li R6,>AA00 movb R6,*R5 li R5,>8AAA li R6,>5500 movb R6,*R5 li R5,>8555 li R6,>A000 movb R6,*R5 movb *R9,*R4 inc R9 inc R4 dec R15 ci R15,>0000 jne WR_LOOP limi 3 b *R11 ALPHA ci R4,>0023 jgt SPACE ci R4,>000A jlt SPACE NUMBER li R7,CHAR * VDP CHAR ADDRESS TABLE a R4,R4 * R4 = R4 + R4 a R7,R4 * SET CHAR "0" + R4 mov *R4,R7 * SET CHAR ADDRESS TO R7 b @>0194 * PRINT NUMBER SPACE li R7,>1922 * SET CHAR " " ADDR TO R7 b @>0194 * PRINT SPACE *************************************************************** *************************************************************** CHAR DATA >19A2,>19AA,>19B2,>19BA,>19C2,>19CA,>19D2,>19DA DATA >19E2,>19EA DATA >1A2A,>1A32,>1A3A,>1A42,>1A4A,>1A52 DATA >1A5A,>1A62,>1A6A,>1A72,>1A7A,>1A82,>1A8A,>1A92 DATA >1A9A,>1AA2,>1AAA,>1AB2,>1ABA,>1AC2,>1ACA,>1AD2 DATA >1ADA,>1AE2,>1AEA,>1AF2 *************************************************************** * MAIN *************************************************************** START li R12,>0060 * INITIAL CELL FUNCTION bl @>019c * li R7,>1800 * VRAM FILL FUNCTION li R8,>f200 * li R9,>2000 * bl @>002c * li R7,>1800 * SCROLL AREA FUNCTION li R8,>02e0 * li R9,>06e0 * bl @>0180 * li R9,>0000 li R15,BOOTMSG LOOP1 li R4,>0000 movb *R15+,R4 swpb R4 ci R4,>0000 jeq CMD1 ai R4,-55 bl @ALPHA b @LOOP1 CMD1 li R9,>0200 li R15,PUSHMSG LOOP2 li R4,>0000 movb *R15+,R4 swpb R4 ci R4,>0000 jeq CMD2 ai R4,-55 bl @ALPHA b @LOOP2 CMD2 bl @>023c * LINE INPUT FUNCTION nop * nop * li R7,>3f9c * INITIAL VRAM ADDRESS li R8,>0000 * INITIAL BUFFER li R9,>0300 li R15,STARTMSG LOOP3 li R4,>0000 movb *R15+,R4 swpb R4 ci R4,>0000 jeq FLASH ai R4,-55 bl @ALPHA b @LOOP3 FLASH li R4,>F000 li R9,FLASH_WRITE li R15,>00a0 LDIR movb *R9+,*R4+ dec R15 ci R15,>0000 jne LDIR bl @>F000 li R9,>0400 li R15,COMPMSG b @LOOP4 ERROR li R9,>0400 li R15,ERRORMSG LOOP4 li R4,>0000 movb *R15+,R4 swpb R4 ci R4,>0000 jeq LOOP5 ai R4,-55 bl @ALPHA b @LOOP4 LOOP5 b @LOOP5 *************************************************************** * DATA *************************************************************** BOOTMSG TEXT "PYUTA FLASH MEMORY WRITER" BYTE >00 PUSHMSG TEXT "PUSH RT KEY TO START" BYTE >00 STARTMSG TEXT "START" BYTE >00 ERRORMSG TEXT "ERROR" BYTE >00 COMPMSG TEXT "COMPLETE" BYTE >00 END
