Search found 93 matches

by ExCyber
Sat Nov 14, 2020 8:30 pm
Forum: Input Devices
Topic: 8bitdo Zero 2 pairing issue
Replies: 3
Views: 234

Re: 8bitdo Zero 2 pairing issue

8BitDo Bluetooth controllers have various modes for different hosts, and I don't think they all work with MiSTer. Judging by the MAC prefix, your controller is probably in Nintendo Switch mode. For most of the recent controllers, the mode is set by holding one of the X/Y/B/A buttons while powering o...
by ExCyber
Wed Sep 16, 2020 10:10 pm
Forum: SNES
Topic: Chrono Trigger issue
Replies: 3
Views: 1048

Re: Chrono Trigger issue

I don't think the latest release had any changes that would affect Chrono Trigger. What version(s) of the ROM do you see this problem with? Are you using any patches or cheats?
by ExCyber
Wed Sep 16, 2020 8:28 pm
Forum: Newcomers Forum
Topic: Canned air on DE10-nano ok?
Replies: 15
Views: 1543

Re: Canned air on DE10-nano ok?

can send voltage back, even with the MiSTer off? Yes. Certain types of electric motor and electric generator are essentially the same structure, just optimized for different purposes. Apply voltage to the terminals and it produces rotation on the rotor; apply rotation to the rotor and it produces v...
by ExCyber
Wed Sep 16, 2020 4:31 am
Forum: Arcade Cores
Topic: Simpsons or X-Men Arcade cores whos Patreon should I back to develop these?
Replies: 5
Views: 1563

Re: Simpsons or X-Men Arcade cores whos Patreon should I back to develop these?

Did I hear correctly that these boards are famous for having loads of custom chips? My memory of this is fuzzy, but I recall that late '80s/early '90s Konami hardware is regarded as noteworthy because they had a library of custom chips that were very flexible and could be combined in various ways t...
by ExCyber
Tue Sep 15, 2020 2:48 am
Forum: X68000, PC88, PC98
Topic: X68000 with non-Japanese keyboard?
Replies: 3
Views: 960

X68000 with non-Japanese keyboard?

I was trying to understand installing things to HDD on X68000, but I ran into a problem because I don't think there's any way to type the yen symbol, which is the directory separator in Human68K, on my US keyboard. The obvious thing would be to use the backslash key (since the character code is the ...
by ExCyber
Tue Sep 15, 2020 1:22 am
Forum: Newcomers Forum
Topic: Is my de10-nano defective ?
Replies: 6
Views: 958

Re: Is my de10-nano defective ?

Yes, that's almost certainly what you're seeing. Most cores require the SDRAM board, and if it's not present they'll mostly just fail in various ways (there are technical reasons that it's difficult to show a proper error message for this situation). SDRAM is optional for Genesis, TurboGrafx-16, GBA...
by ExCyber
Sat Sep 12, 2020 4:09 pm
Forum: Newcomers Forum
Topic: MiSTer Intermittent Bootup
Replies: 6
Views: 890

Re: MiSTer Intermittent Bootup

This is kind of a long shot, but I'd check the DIP switches and make sure that they're firmly flipped to the default setting (see page 11 in the DE-10 Nano User Manual). If one of them isn't making good contact, the FPGA might be trying to load a bitstream from the wrong place.
by ExCyber
Mon Sep 07, 2020 4:08 pm
Forum: Gameboy Advance
Topic: Sound Filters to Improve GBA Audio?
Replies: 2
Views: 1065

Re: Sound Filters to Improve GBA Audio?

The problems allegedly start with the game's music engine losing resolution when it mixes samples. If this is true, I don't think a filter on the output can really fix it; that's basically the audio equivalent of the "zoom and enhance" trope. I'd guess that really fixing it would involve altering th...
by ExCyber
Wed Sep 02, 2020 4:21 am
Forum: SNES
Topic: Mega Man X3 Zero Project 4.1 save issue.
Replies: 13
Views: 2107

Re: Mega Man X3 Zero Project 4.1 save issue.

Well I'm glad you're making progress in getting something working. When I said I assume the Cx4 doesn't need to be involved I wasn't aware how much of memory mapping the Cx4 is in charge of. I was thinking if the SRAM area used by the hack is not causing the Cx4 to control the bus then it'd be simp...
by ExCyber
Mon Aug 31, 2020 11:58 pm
Forum: SNES
Topic: Mega Man X3 Zero Project 4.1 save issue.
Replies: 13
Views: 2107

Re: Mega Man X3 Zero Project 4.1 save issue.

If you can find the bits that map your normal LoROM cartridge SRAM and add that to Cx4's setup/init the hack might be happy with that. As I indicated in my previous post, this approach doesn't work as stated. However, one thing that did get saves working was to simply edit the HDL to replace the CX...
by ExCyber
Mon Aug 31, 2020 2:06 pm
Forum: SNES
Topic: Mega Man X3 Zero Project 4.1 save issue.
Replies: 13
Views: 2107

Re: Mega Man X3 Zero Project 4.1 save issue.

Are you talking about the Cx4's internal ram? It occurred to me that the SNES_MiSTer BSRAM block might have been co-opted as CX4 "internal" RAM, but I don't think that's the case. I didn't really account for the "Program RAM" described in CX4 documentation, but that's apparently too big to fit in t...
by ExCyber
Sun Aug 30, 2020 4:27 pm
Forum: SNES
Topic: Mega Man X3 Zero Project 4.1 save issue.
Replies: 13
Views: 2107

Re: Mega Man X3 Zero Project 4.1 save issue.

I don't really understand the details of the mapping, but it looks like the basic problem is that SRAM is only activated when CX4 reads or writes the SRAM space, not when the CPU does. However, fixing that in the straightforward way causes some obviously wrong junk to be written to SRAM. In principl...
by ExCyber
Sun Aug 30, 2020 3:39 am
Forum: C64, C16, VIC20
Topic: A matter of Bits and Cartridges.
Replies: 9
Views: 1307

Re: A matter of Bits and Cartridges.

Navigating this stuff can be a little tedious, and does take some practice. I assume some kind of smart editor support with a "find usages" function exists somewhere, but I've never personally seen one that actually works (let alone across Verilog and VHDL), so I just use grep and the search functio...
by ExCyber
Sat Aug 29, 2020 5:08 am
Forum: C64, C16, VIC20
Topic: A matter of Bits and Cartridges.
Replies: 9
Views: 1307

Re: A matter of Bits and Cartridges.

The SDRAM address bus is too few bits because it's multiplexed into row and column addresses, as is conventional for DRAM in general. The conventional idea is that you put the row address on the bus, strobe /RAS, wait some specified amount of time, put the column address on the bus, strobe /CAS, the...
by ExCyber
Sat Aug 29, 2020 4:29 am
Forum: SNES
Topic: Mega Man X3 Zero Project 4.1 save issue.
Replies: 13
Views: 2107

Re: Mega Man X3 Zero Project 4.1 save issue.

There are such bytes, but I don't see any obvious problem in how they're interpreted by MiSTer. However, each special chip cartridge type also has its own logic in SNES_MiSTer to handle mapping, so there could be an incompatibility specific to the combination of CX4 and SRAM. The CX4 code definitely...
by ExCyber
Thu Aug 27, 2020 6:50 pm
Forum: General Discussions
Topic: New MiSTer hardware board
Replies: 39
Views: 5301

Re: New MiSTer hardware board

I'll consider the mini-itx size first as we could easily fit in some really nice case like this one : PHNXTOEM One thing I'm not sure about for Mini-ITX is the I/O shield. Standard Mini-ITX cases take the same I/O shield size as ATX, but I think the linked case is Thin Mini-ITX which uses a 25 mm t...
by ExCyber
Wed Aug 26, 2020 4:14 am
Forum: Development for MiSTer
Topic: More Configuration Bits?
Replies: 10
Views: 1540

Re: More Configuration Bits?

I'm not an expert on the MiSTer framework either, so take this with a grain of salt, but it looks to me like: 1) The status port was already expanded to 64 bits, it's just that only 32 of them are directly accessible through the configuration string. 2) There's a mechanism for custom handling of an ...
by ExCyber
Wed Aug 26, 2020 2:18 am
Forum: General Discussions
Topic: New MiSTer hardware board
Replies: 39
Views: 5301

Re: New MiSTer hardware board

Vampire V4 uses the same family (Cyclone V), but I doubt it's the same chip. I didn't see any references to the exact part, but one preorder page says 77K LEs, which is smaller than MiSTer's fabric and is a size only available in the non-SoC parts (i.e. parts without the integrated ARM system that r...
by ExCyber
Mon Aug 24, 2020 9:16 pm
Forum: Official Addon Boards
Topic: AS4C32M16SB-6TIN Frequency question
Replies: 6
Views: 878

Re: AS4C32M16SB-6TIN Frequency question

As far as I know, 130 MHz is considered the baseline for an acceptable board (due to the Archie core running SDRAM at 126 MHz), and the more reputable sellers test at 140 just for some extra margin.
by ExCyber
Mon Aug 24, 2020 5:50 pm
Forum: Display Devices
Topic: Why does YPbPr look extremely blue? External RGBHV to Component looks fine? (pictures inside)
Replies: 4
Views: 764

Re: Why does YPbPr look extremely blue? External RGBHV to Component looks fine? (pictures inside)

Maybe the Pb signal is shorted to ground in the cable? I don't have any specific experience with such a failure, but it seems plausible from some napkin algebra:

Code: Select all

 Pb = B - Y
 0  = B - Y
+Y       +Y
 Y  = B
by ExCyber
Mon Aug 24, 2020 5:11 pm
Forum: Minimig (Amiga)
Topic: Can't Load KERN.ROM
Replies: 12
Views: 1486

Re: Can't Load KERN.ROM

Are you using ROM files from Amiga Forever? Those won't load unless the rom.key file is in the same directory.
by ExCyber
Sun Aug 23, 2020 7:11 pm
Forum: Official Addon Boards
Topic: 128MB SDRAM using AS4C32M16SC chips
Replies: 4
Views: 819

Re: 128MB SDRAM using AS4C32M16SC chips

It's been a long time since I've seen the relevant math, but as far as I know the delay imposed by the board and connectors is relatively constant in this frequency range. So with 133 MHz chips I would not expect it to be stable at much more than 110 MHz.
by ExCyber
Sun Aug 23, 2020 6:24 pm
Forum: ao486
Topic: Installing 98lite with SE & 95 (Guide)
Replies: 17
Views: 2791

Re: Installing 98lite with SE & 95 (Guide)

I can't post a link here as nefarious scumbags who do not legitimately own every single piece of software used would be inclined to download it illegally ;) not sure, as microsoft itself published the vhd on archive.org I don't think Microsoft would do that. The details seem to be lost in the mists...
by ExCyber
Sat Aug 22, 2020 6:37 pm
Forum: Other Console Cores
Topic: Unaccounted for console/handheld cores?
Replies: 17
Views: 2884

Re: Unaccounted for console/handheld cores?

Part of the reason a lot of these aren't available is that they use obscure (at least by retrogaming/retrocomputing standards) processor families, so it's a lot of effort for one or two platforms per family, most of which have few games at all and even fewer good games: Microvision: Intel 8021 and T...
by ExCyber
Thu Aug 20, 2020 7:07 pm
Forum: General Discussions
Topic: New MiSTer hardware board
Replies: 39
Views: 5301

Re: New MiSTer hardware board

At some level, I'd love to see an all-in-one MiSTer-compatible board, preferably with a standard form factor (e.g. Mini-ITX), soft power control, and HDMI CEC. However, considering that the price is a huge part of what makes MiSTer viable as a platform, I think a more expensive version is a hard sel...