China DOS Union

Wengier！ Because I haven't been able to log into the "Dandiao Forum" all afternoon today (the same thing happened yesterday afternoon too), I'm asking you here!
I loaded “OHCI.EXEUHCI.EXE” in "AUTOEXEC.BAT" according to the modification method you provided on the "Dandiao Forum", but as soon as it gets to loading “UHCI.EXE” the system hangs. The screen shows the following message: "UHCI USB CONTROLLER INITIALIZED", then the cursor just blinks underneath. Pressing any key does nothing; I can only press "RESET" on the case. How can this be solved? Do I also need to modify some other files??? And if it loads successfully, will there be insufficient memory causing some programs not to run???
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AUTOEXEC.BAT
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@ECHO OFF
PROMPT $P$G
PATH A:\;C:\
set temp=c:\
set tmp=c:\

SET EXPAND=YES
SET DIRCMD=/O:N
set LglDrv=27 * 26 Z 25 Y 24 X 23 W 22 V 21 U 20 T 19 S 18 R 17 Q 16 P 15
set LglDrv=%LglDrv% O 14 N 13 M 12 L 11 K 10 J 9 I 8 H 7 G 6 F 5 E 4 D 3 C
call setramd.bat %LglDrv%
path=C:\;%RAMD%:\;%RAMD%:\BAT;%CDROM%:\;%CDROM%:\UCDOS;%CDROM%:\BOOT;
copy get.exe %RAMD%:\ > NUL
copy attrib.exe %RAMD%:\ > NUL
copy command.com %RAMD%:\ > NUL
copy edit.com %RAMD%:\ > NUL
copy format.com %RAMD%:\ > NUL
copy fdisk.exe %RAMD%:\ > NUL
copy deltree.com %RAMD%:\ > NUL
copy restart.com %RAMD%:\ > NUL
copy ramexec.bat %RAMD%:\ > NUL
copy xxcopy.exe %RAMD%:\ > NUL
rem copy extract.exe %RAMD%:\ > NUL
set comspec=%RAMD%:\command.com
LH MSCDEX.EXE /D:MSCD000 /L:%CDROM%
LH SMARTDRV.EXE 4096
LH DOSKEY.COM > NUL
LH OHCI.EXE >NUL
LH UHCI.EXE >NUL
LH CTMOUSE.EXE > NUL
Set LglDrv=

MD %RAMD%:\TEMP
rem extract /y /e /l %RAMD%: ebd.cab > NUL
XXCOPY /E /H %CDROM%:\BOOT\EBD %RAMD%:\ > NUL
%RAMD%:
ramexec.bat
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1. Which file, “OHCI.EXE and UHCI.EXE,” supports a usb mouse? Which file supports a usb keyboard?
2. If I want to load a startup picture (LOGO) before the boot menu appears, do I just save the finished picture as “LOGO.SYS” and then copy it to the root directory? Or—? Please advise!!!!

About LOGO.SYS, that's right.

OHCI.EXE and UHCI.EXE are both drivers for USB keyboards and USB mice, but please don't load them both at the same time. You should load only one of them according to the actual situation.

Note: I also can't get into Dandiao right now.

Many thanks