Search found 721 matches
- Sun Sep 16, 2018 8:07 pm
- Forum: FPGA DEVELOPMENT
- Topic: Project: HDMI/DVI out for STFM
- Replies: 666
- Views: 320694
Re: Project: HDMI/DVI out for STFM
Finally, this mystery has been solved. A clue was indeed in why sometimes after reset the videomode wasn't correct. The resets were caused by TOS detecting a change to mono. A bootsector that immediately disables the TOS reset vector at $46e (resolution change vector) stops the 520ST (where I did th...
- Sun Sep 16, 2018 12:25 pm
- Forum: FPGA DEVELOPMENT
- Topic: Project: HDMI/DVI out for STFM
- Replies: 666
- Views: 320694
Re: Project: HDMI/DVI out for STFM
Wow. It absolutely is. Connected up an HxC slim to my beautiful internal floppy header in the 520ST and booted ... Closure. No resets at all. So previously I had looked at /MONOMON with my LA to see if it triggered - since one of the few ways an ST resets cleanly is when TOS detects a mono monitor h...
- Sun Sep 16, 2018 12:11 pm
- Forum: FPGA DEVELOPMENT
- Topic: Project: HDMI/DVI out for STFM
- Replies: 666
- Views: 320694
Re: Project: HDMI/DVI out for STFM
I'm not less confused. Fatter GND and resistor on VSYNC made no difference. So just to rule out the possibility that the FPGA is fine and _both_ my doubleST and 520ST are weird I pulled up a non-recapped pure stock-as-stock-can-be 1040 STF and put it in there. Booting without a disk in the drive, or...
- Sat Sep 15, 2018 10:24 am
- Forum: ALPHA DEVELOPMENT INFO
- Topic: PSU bracket remake ?
- Replies: 91
- Views: 53669
Re: PSU bracket remake ?
When you're done I'll print this as well (Ultimake 2) and verify with one of many PSUs laying around here. I have M3 nuts and bolts already.
Good remake of the original metal design into something more suitable for 3D printing!
Good remake of the original metal design into something more suitable for 3D printing!
- Fri Sep 14, 2018 11:23 pm
- Forum: ALPHA DEVELOPMENT INFO
- Topic: PCB Build - Progress - Post your Pics here :-)
- Replies: 135
- Views: 64035
- Fri Sep 14, 2018 10:30 pm
- Forum: ALPHA DEVELOPMENT INFO
- Topic: PCB Build - Progress - Post your Pics here :-)
- Replies: 135
- Views: 64035
Re: PCB Build - Progress - Post your Pics here :-)
Ok Then you need to manually patch it if you don't have a 12V source (I think ube wrote how in one of these threads). And without ram maybe that current usage would actually be correct.
- Fri Sep 14, 2018 10:18 pm
- Forum: ALPHA DEVELOPMENT INFO
- Topic: PCB Build - Progress - Post your Pics here :-)
- Replies: 135
- Views: 64035
Re: PCB Build - Progress - Post your Pics here :-)
I've plugged the board into my bench power supply, just the two five volt and two 0 volt rails and recorded a current use of 440ma. None of the components are even warm to touch after being on for 5 mins but no video as yet. I presume the lack of video is due to a lack of 12v going to the board? wh...
- Tue Sep 11, 2018 6:11 pm
- Forum: ALPHA DEVELOPMENT INFO
- Topic: SUGGESTIONS
- Replies: 48
- Views: 46443
Re: SUGGESTIONS
I guess patched code could check the register to see if a write fails or something.. Then it knows if its running on the new MMU or not... or just separate patched versions of software :shrug: Yeah that's no problem. Demos can easily check to see if the functionality is there, and new TOS images co...
- Tue Sep 11, 2018 5:28 pm
- Forum: ALPHA DEVELOPMENT INFO
- Topic: SUGGESTIONS
- Replies: 48
- Views: 46443
Re: SUGGESTIONS
I can only really think that the CPU will have to write start and end address of block to clear into a register. Then the MMU will clear that block, and likely send DTACK to CPU when clear is finished. Exactly. That wouldn't break any existing code (bar any miswrites to that previously not used reg...
- Tue Sep 11, 2018 5:03 pm
- Forum: ALPHA DEVELOPMENT INFO
- Topic: SUGGESTIONS
- Replies: 48
- Views: 46443