A few questions about using sd card

[kof888]

Recently I bought another sd card device to use on the dc

although I already have the cloned gdemu and mode, but I am still very interested in DreamShell, because I have not used DreamShell for many years, so I have a few questions to ask

1 Can I run my own compiled programs in DreamShell? Such as elf or bin, I don't know what is the process of loading files in DreamShell

2 I tested it, depending on the compatibility of iso_loader with sd card (especially for some games that need to run programs in ip.bin separately)

3 Using sd.bin to play the game BIOHAZARD CODE VERONICA PLUS, is there a bug of infinitely taking tiger head gems in cd2? I don't have a hard disk, I just tested it on the sd card and found that this bug will also exist. I wonder if this problem also exists on the hard disk?

4 Does using sd.bin not support reading CDI files like atomiwaves does? I wrote a piece of code like this before the cdi game started, the display is black, but the test on gdemu is normal, if you remove this code, then it works fine in DreamShell

syscall C0,
similar to the following
................................
r8=0x8C0000C0
mov.l @r8, r0
mov #h'1C, r4
jsr @r0
r7=0;


Thank you for your responses

Please forget my bad English, I don't speak English, I used google translate