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Re: The LlamaBlaster

If the rom space you allow is big enough, (64K sized window, maybe with a jumper?) Then the same EEPROM can contain the XTIDE XUB, as well as your card init routine. There's 32 kB of addressable rom space, located at either 0xC8000 or 0xD8000 (selectable by a jumper). And yes, that space is plenty …

Re: The LlamaBlaster

Question, is the plan to JCL doing PCB+ all SMD components levaing only the PTH components to be manually soldered? For this initial version, JLC will be assembling most of the components (including some of the TH ones). What's left are the Nichicon caps and the PSRAM, which I've ordered from …

Re: The LlamaBlaster

...and work on getting the CS4237 config/initialization routines ported from C (from the ITX-Llama project) to assembly, for loading from the option rom. The bochs emulator with its debugger is very handy for quick development of the menu and user input. For testing with the Crystal chip, I'll use …

Re: The LlamaBlaster

First prototype batch is in production. I had to do a cancel+re-order because JLC doesn't like the trace clearance to be <0.15mm if there is less than 30% copper fill on a layer - which is weird and undocumented. But I got it sorted in any case. Here's a render of the prototype: Screenshot 2024-02- …

Re: The LlamaBlaster

Indeed, looks great! And you're mighty fast in your project! Took me weeks to finish my card two years back. I actually also tried converting my version into rounded tracks a few weeks ago and that instantly made the DRC and Kicad crash. That issue has been fixed by now, though :) Thanks! I ran the …

Re: The LlamaBlaster

Tried experimenting with rounded traces, I think it looks cool: Filename Screenshot 2024-02-19 at 08.27.18.png File size 614.66 KiB Views 179 views Filename Screenshot 2024-02-19 at 08.27.48.png File size 590.8 KiB Views 179 views Filename Screenshot 2024-02-19 at 09.33.43.png File size 617 KiB …

Re: The LlamaBlaster

Nearing completion of the first prototype: Filename Screenshot 2024-02-16 at 01.54.23.png File size 577.36 KiB Views 296 views Filename Screenshot 2024-02-16 at 01.54.51.png File size 1.03 MiB Views 296 views Filename Screenshot 2024-02-16 at 01.55.40.png File size 1.78 MiB Views 296 views Filename …

Re: The LlamaBlaster

Schematic and component selection done, currently doing layout and routing... Filename Screenshot 2024-02-11 at 01.36.14.png File size 305.53 KiB Views 366 views Filename Screenshot 2024-02-11 at 01.37.26.png File size 275.8 KiB Views 366 views

Re: The LlamaBlaster

Ok, so after thinking about this a bit more, here's my revised plan: - Dropping the HardMPU hardware - I think the PicoGUS should be able to handle intelligent mode MPU-401 just as well (if not better). The only downside is that you have to re-program the RP2040 when switching between GUS and MIDI, …

Re: The LlamaBlaster

I'm glad I ordered some CS4237 and OPL3 chips just-in-case when I was inspired by the ITX-Llama. I'd be very interested in building one of these. Also, I agree that at least support for the XTIDE BIOS ROM would be nice. Maybe dual option-ROMs on one EEPROM? Or someone could modify XTIDE to do the …

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