After fixing some boneheadedness in the ASIC event code (and a whole passel of translator caching and other bugs), I’ve finally gotten to the login prompt:

(to clarify, this is the dreamcast-linux-010605 ISO that Takeshi Yaegashi put together several years ago, running a modified 2.4.5 kernel)

Unfortunately (after the happy dance), it was at this point that I realised I haven’t actually implemented the keyboard yet, so it’s impossible to do anything useful with it. It’s also admittedly painfully slow to start, but I was expecting that (TLB lookup is currently near pessimal).

Anyway, working on the keyboard driver now ^_^.

PS: If anyone has a working link to this image, please let me know where it is (I’d like to keep a link to it) - my google-fu has utterly failed to turn up a good version as yet, and my own copy is only on a somewhat scratched CD…
Changes

• Add VMA support to the SH4 disassembly functions
• Handle out-of-page delay slot execution with emulation single-step
• Finish translator breakpoint implementation
• Fix a pair of long standing ASIC event bugs
• Fix xltcache forgetting to clear references to blocks before overwriting them
• Fix recovery + backpatch records not being position independent (big duh!)
• Fix yet another translate block bounds overrun
• Fix MAC.L/MAC.W exception handling (broke the stack if the second arg caused an exception)
• Fix various other minor bugs

Update: Just hacked together a quick keyboard driver, able to login and launch X now. Excellent…

This entry was posted on Wednesday, January 23rd, 2008 at 9:27 am and is filed under Development. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.