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#pc98

3 posts1 participant0 posts today
Replied to wyatt

@wyatt Also glancing from the #PC98 architecture and specific quirks that #Linux accounts for in menuconfig it's most likely not gonna be enough to "just boot the #i486 version of @OS1337"...
github.com/OS-1337/OS1337/blob

  • Tho given the fact this is just a #toybox + #musl / Linux Distro that is barely booting using #syslinux and able to spit out a 80x25 MDA console, it is in an early infancy.

As for the specifics of the #PC9821+ and their detailed hardware I'm clueless beyond the Wikipedia Article and can only Assume anything before a (RAM-upgraded) #9821Ap & #9801BA is off the table and a #9821Af or better is desireable as the 14,6MB RAM limit will really become a problem quickly, as I'm pretty shure it's impossible to get linux-6.6.6 run on anything below 8MB at all and most recommendations hint that 16MB is more often than not a practical limit (tho that may be becaise 10/12/14 and other "asymetric" configurations were already avoided back then)...

  • The #9821Ce should be workable in theory tho again that's just me reading a specsheet.

On the flipside I did manage to install #WindowsXP on machines with 32MB RAM and actually get them to display a desktop (abeit with seconds per frame instead of frames per second) so this is more likely a question of chipping down things.

  • Worst-Case one could see to build a bootable CD-ROM or dd something on a #BlueSCSI or similar...
OS/1337 Project . Contribute to OS-1337/OS1337 development by creating an account on GitHub.
GitHubOS1337/OS1337-core-prerelease.img at main · OS-1337/OS1337OS/1337 Project . Contribute to OS-1337/OS1337 development by creating an account on GitHub.

Got the Normal 1cc (6 initial lives) with Yuuka tonight as well! Surprisingly she's easier to clear with than Marisa for me... ​:gyate_yuuka_rember:​ That should be all 4 characters in Mystic Square cleared and their Extra stages unlocked. Can confirm the Mima Extra replay/demo being unlocked (can be seen by holding left and right arrow keys on the title screen while waiting for demo) as well ​:mimahappy:

#Touhou #PC98Touhou #PC98 #TH05 #MysticSquare #1cc #shmup

RE:
https://makai.chaotic.ninja/notes/a8k0e8a7mx

FC-1307 Rev1.5のファームウェアをPC-98/EPSON互換機で使用できるようにするパッチ2025/04/16版。
✅ IOP0-3の状態を無視するパッチ。パターンカット不要
✅ CHS容量リミットを4351MB(65535x8x17セクタ)に
はそのままに
✅ Native/Current両方のシリンダ値を正しく計算し65535で頭打ちするように修正
✅ 初期のEPSONノート機で2GBを超えるとハングアップしてしまう問題を回避(H=4が指定されたときにNativeパラメータが変動して2175MBまで使用可)
改造の経緯は
こちらを参照
#PC-98 #PC98 #FC1307A

Original:
FC-1307 2015_10_16-BANK CF_V1.5B17.bin 65,536byte Download
CRC32=
2F99F86C

diff --git a/FC-1307_1.5_.bin b/FC-1307_1.5_.bin
index 7e3b8536b7735757a52cbd40ec9b17df5cae8fb2..d4da4a477dffa8c1467c98efdc64cc5c7de564d1 100755
GIT binary patch
delta 330
zcmZo@U}Ikjkzw-%<_+q691IK$4oreT5(Fl1)E1e%NV|@Up@hMKp@YGM!C~@2
zy^76?bP|PFjZ94p%_bY#ODQ-xI(vr(D1;g6nJNGQgRgT*YPLdvv#zCufq_D>%Va0}
zJxpQ$HaScZX62};Efd^4Jvd#5iRt;KhOaF36{RKrON-k}ix?Dq9YU%IYjZSk6--%o!0
z{3WEDvxk9oF9TBpOWpta{}UXT-hWv94z6Z(EmTp(qGvGm{aR47ku`$+KEWXeta&j|
i@rT7vJ}iD(yLnz~f)$fO%jSc6_5zzP=o!F?M1BA~nT7xW

delta 257
zcmZo@U}Ikj@!#eP%p27C1Q-|?9GL8ZBnV92s4X&ik#-#yO9_JmLkEiqgTv&5
zdKH@&=_CrVC>ZLQPL8yf=5}&)_6`kD2m|r!?d2wW+izy7QrYA%NtjijqPEO_^Yq|!
z9i}tSHZ^=@F%~E-`BPf_yR?Ww!AGuMpzcrY?-~XnJ;%dBy8i-rE2awRnf90VmGl<(
z6s<2^SF*NvP0{2T(-Z_S1pTKfsKEp$I50ge{jm6H$%hFJIZ)Q(5`hnkpL|$cV!wG_
XYl0Qi!^q7C_3Q;UU(hpv6N&r)bAD$%

ZennFC1307A搭載SD-IDE変換基板のおかしな挙動を直す