まずは5511emuをダウンロードします。
https://bitbucket.org/hdk_2/5511emu
ROMイメージを準備します。
- BASE_E.ROM : E0000h-EFFFFh
- BASE_F.ROM : F0000h-FFFFFh
- FONT_8.ROM : Font ROM 80000h-8FFFFh
- FONT_9.ROM : Font ROM 90000h-9FFFFh
- FONT_A.ROM : Font ROM A0000h-AFFFFh
- FONT_B.ROM : Font ROM B0000h-BFFFFh
上記FONT_8.ROM～FONT_B.ROM(00000-3FFFF)は以下のJXFONTDMP.COMで実機から取得できます。
- -e: Set window size for extended video mode
- -d8 for D8000h, application, 32KiB extended video (Kakucho-hyoji) mode cartridge
上記EXTVIDO.ROM(38000-3FFFF)は以下のJXEXTTDMP.COMで実機から取得できます。
http://www.geocities.jp/parallel_computer_inc/dumpmem.zip
jxextdmp.s
# EXT VIDEO ROM dump program for JX # Copyright (C) 2018 tanam1972 # To assemble: # gcc -nostdlib -nostdinc -Wl,--oformat=binary -Wl,-Ttext,0x100 -o jxextdmp.com jxextdmp.s .code16 _start: .global _start mov $0x11, %ax int $0x10 mov $startm, %dx mov $0x9, %ah int $0x21 push %cs pop %ds mov $filnam, %dx xor %cx, %cx mov $0x3c, %ah int $0x21 jc opener mov %ax, %bx mov $0xa000, %ax 1: mov %ax, %ds push %ax xor %si, %si push %cs pop %es mov $buf, %di cld mov $0x1ff, %dx mov $0x3709, %cx cli call outga inc %cx call outga mov $0xb007, %cx call outga mov $0x4000 / 2, %cx rep movsw mov $0x3007, %cx call outga mov $0xb70a, %cx call outga sti push %cs pop %ds mov $buf, %dx mov $0x4000, %cx mov $0x40, %ah int $0x21 jc writee cmp $0x4000, %ax jne writee pop %ax add $0x400, %ax cmp $0xe000, %ax jb 1b mov $0x3e, %ah int $0x21 mov $endm, %dx mov $0x9, %ah int $0x21 mov $0x4c00, %ax int $0x21 outga: in %dx, %al mov %cx, %ax out %al, %dx mov %ah, %al out %al, %dx ret opener: mov $openms, %dx 1: mov $0x9, %ah int $0x21 mov $0x4c01, %ax int $0x21 writee: mov $writem, %dx jmp 1b filnam: .string "extvido.rom" startm: .ascii "EXT VIDEO ROM dump program for JX\r\n" .ascii "Copyright (C) 2018 tanam1972\r\n$" openms: .ascii "Create file failed\r\n$" writem: .ascii "Write to file failed\r\n$" endm: .ascii "Done\r\n$" buf:
