Search found 815 matches

by JimDrew
Tue Oct 08, 2019 10:02 pm
Forum: MiSTer
Topic: SDRAM board
Replies: 336
Views: 110736

Re: SDRAM board

I didn't say all de10 are the same. I just say that de10 not able to run more than 110MHz with 128MB module is BS. It's either broken de10 board or badly soldered SDRAM module. Yes, de10 have tolerance from board to board, as SDRAM boards too. Some de10 may have errors on 150MHz. Some of them will ...
by JimDrew
Tue Oct 08, 2019 6:26 pm
Forum: MiSTer
Topic: SDRAM board
Replies: 336
Views: 110736

Re: SDRAM board

You have clearly missed the point here about DE-10 Nano board having different results. I would be happy to provide a video showing the results of the same SDRAM board in various DE-10 Nano boards. You are fool to believe that all of the DE-10 Nano boards have the same results with a plug-in type mo...
by JimDrew
Tue Oct 08, 2019 9:50 am
Forum: MiSTer
Topic: SDRAM board
Replies: 336
Views: 110736

Re: SDRAM board

Some pass at 110MHz That must be a bad soldering. All 128MB modules properly soldered are passing at least 140MHz in memtest. The soldering is fine. :) Just switching DE-10 Nano boards shows different results. I have one DE-10 Nano board that won't pass any 128MB module (no matter which type, the M...
by JimDrew
Tue Oct 08, 2019 7:37 am
Forum: MiSTer
Topic: Minimig (Amiga) core discussion
Replies: 1004
Views: 175417

Re: Minimig (Amiga) core discussion

Well, that would explain the compatibility issues then for the Mac emulation. For PCx, it seems that something is broken in the one of the complex address modes or something. I verified that bits 24-31 in addresses are being adversely affected by "something".
by JimDrew
Mon Oct 07, 2019 7:56 pm
Forum: MiSTer
Topic: Minimig (Amiga) core discussion
Replies: 1004
Views: 175417

Re: Minimig (Amiga) core discussion

Yeah, funny to see bug report from instruction which is listed as unimplemented. Pinball Illusion also relays on CMP2 (or CAS2 - i don't remember). The Mac OS also uses CAS/CAS2. In fact, the Mac OS uses every single valid 68020+ opcode. When a 68040 is present it also uses MOV16 and other 040 spec...
by JimDrew
Mon Oct 07, 2019 7:51 pm
Forum: MiSTer
Topic: Minimig (Amiga) core discussion
Replies: 1004
Views: 175417

Re: Minimig (Amiga) core discussion

As CMP2 is not implemented, it hardly can write anything. But what happens with an unimplemented opcode, that's another question. Well, whatever the opcode lookup is doing is actually WRITING to whatever the first comparison value (A1 in the example I gave) is pointing to. The Mac OS uses CMP2. So ...
by JimDrew
Mon Oct 07, 2019 7:46 pm
Forum: MiSTer
Topic: SDRAM board
Replies: 336
Views: 110736

Re: SDRAM board

I was saying that based on your picture, your memory is working fine. I will say this - the DE-10 Nano itself varies from unit to unit. I built a couple of the MiSTer 128MB boards. I also designed my own similar 128MB version. All of my DE-10 Nano boards give different results with any design that u...
by JimDrew
Mon Oct 07, 2019 8:24 am
Forum: MiSTer
Topic: Minimig (Amiga) core discussion
Replies: 1004
Views: 175417

Re: Minimig (Amiga) core discussion

Well, I looked at FUSION... it doesn't work with 512K or 1MB Mac ROMs... which means there is a problem with the most significant byte of the longword (bits 24-31). I also confirmed this with PCx (my PC emulator). It crashes when trying to launch EMM386 or Windows. So, I took a quick look at some te...
by JimDrew
Mon Oct 07, 2019 8:21 am
Forum: MiSTer
Topic: SDRAM board
Replies: 336
Views: 110736

Re: SDRAM board

Looks good to me... maybe you don't realize that the red 00000000's is the number of errors (none)?
by JimDrew
Mon Oct 07, 2019 7:02 am
Forum: MiSTer
Topic: Minimig (Amiga) core discussion
Replies: 1004
Views: 175417

Re: Minimig (Amiga) core discussion

rondc wrote:When running Fusion with Kick 3.1, this is what happens...


Well... other than the Vampire, that's the first time I have seen any FPGA based Amiga emulation even be able to start the Mac with FUSION! I will have to look into see why FUSION is crashing.
by JimDrew
Mon Oct 07, 2019 6:58 am
Forum: MiSTer
Topic: SDRAM board
Replies: 336
Views: 110736

Re: SDRAM board

Your RAM only needs to pass 130MHz to run *everything* that the MiSTer project has to offer. Instability, with a memory test that passes, is related to something else other than the memory system.
by JimDrew
Sat Oct 05, 2019 4:49 am
Forum: MiSTer
Topic: Minimig (Amiga) core discussion
Replies: 1004
Views: 175417

Re: Minimig (Amiga) core discussion

I have a pretty thorough test suite for the 020+ instructions, and I focused on the all of the bitfield based instructions. I will take a look at the Minimig core. SOME bitfield instructions do have extended modes that do use address registers, ie: TEST_BFINS: lea Me(pc),a0 moveq #1,d0 moveq #0,d1 m...
by JimDrew
Sat Sep 07, 2019 10:21 pm
Forum: MiSTer
Topic: SDRAM board
Replies: 336
Views: 110736

Re: SDRAM board

I have been paying just under $7 each set (128MB) at 500 pcs. $11 should be the 100 piece pricing.
by JimDrew
Sat Jul 27, 2019 6:41 am
Forum: MiSTer
Topic: Minimig (Amiga) core discussion
Replies: 1004
Views: 175417

Re: Minimig (Amiga) core discussion

You must not be in the U.S. 8 bit (256 color) mode was the most common used Workbench screen. I had tens of thousands of customers in the U.S. that used this mode for their Amigas. It's the reason why I created the Workbench Window video driver for FUSION.
by JimDrew
Sat Jul 27, 2019 6:37 am
Forum: MiSTer
Topic: Local Sellers for MiSTer Expansion Boards
Replies: 425
Views: 179379

Re: Local Sellers for MiSTer Expansion Boards

simbin wrote:Who are the recommended sellers for 64MB boards here in the USA?


I have some already, but every post I make about this is being deleted by someone?
by JimDrew
Thu Jul 25, 2019 9:09 am
Forum: MiSTer
Topic: Minimig (Amiga) core discussion
Replies: 1004
Views: 175417

Re: Minimig (Amiga) core discussion

Someone brought to my attention that the internet connection at 115200 bits/second does not work reliably when 256 colors are displayed.But since no one sane would use that many colors on the workbench, I guess we do not need to investigate the problem. Seriously? You do realize that this is THE mo...
by JimDrew
Wed Jun 12, 2019 9:14 pm
Forum: SuperCard Pro Disk Copier
Topic: SuperCard Pro update!
Replies: 4
Views: 3692

Re: SuperCard Pro update!

It looks like we should be able to replace the filesystem handler so that we can support various disk formats. So, besides sticking in a disk and reading/writing it as MS-DOS, you could opt to read/write it as Amiga, Atari ST, Apple Mac, 1541, etc. I plan for support for 360K/1.2MB 5.25" drives...
by JimDrew
Wed Jun 12, 2019 4:32 am
Forum: SuperCard Pro Disk Copier
Topic: SuperCard Pro update!
Replies: 4
Views: 3692

SuperCard Pro update!

I have spent the last 6 months working on various new retro products, and now I am finally getting back to updating SuperCard Pro. I have hired a programmer through FreeLancer to write a virtual floppy driver so that disks inserted into a SuperCard Pro setup will appear as drive A: (or B:) under Win...
by JimDrew
Sat May 04, 2019 7:30 am
Forum: MiSTer
Topic: Minimig (Amiga) core discussion
Replies: 1004
Views: 175417

Re: Minimig (Amiga) core discussion

Sorgelig wrote:I've pushed Q13 project files. Q13 takes ~8m30 to compile on my computer. While Q17 needs ~13m40.


Wow... and here I complain about 1.6 million lines of assembly code taking almost 5 seconds to assemble! :)
by JimDrew
Thu Apr 11, 2019 11:17 pm
Forum: MiSTer
Topic: Local Sellers for MiSTer Expansion Boards
Replies: 425
Views: 179379

Re: Local Sellers for MiSTer Expansion Boards

I have a limited number of assembled XS type SDRAM boards and RTC boards, as well as v5.5 bare I/O boards. I ship world-wide daily.

DE-10 Super Expansion Board memtest:

seb_memtest.jpg
by JimDrew
Thu Mar 14, 2019 6:33 am
Forum: MiSTer
Topic: C64 NeoHabitat Disk-B won't load
Replies: 16
Views: 1825

Re: C64 NeoHabitat Disk-B won't load

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by JimDrew
Thu Mar 14, 2019 6:26 am
Forum: MiSTer
Topic: C64 NeoHabitat Disk-B won't load
Replies: 16
Views: 1825

Re: C64 NeoHabitat Disk-B won't load

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by JimDrew
Thu Mar 14, 2019 4:08 am
Forum: MiSTer
Topic: C64 NeoHabitat Disk-B won't load
Replies: 16
Views: 1825

Re: C64 NeoHabitat Disk-B won't load

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by JimDrew
Thu Mar 14, 2019 4:05 am
Forum: MiSTer
Topic: C64 NeoHabitat Disk-B won't load
Replies: 16
Views: 1825

Re: C64 NeoHabitat Disk-B won't load

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by JimDrew
Thu Mar 14, 2019 4:04 am
Forum: MiSTer
Topic: C64 NeoHabitat Disk-B won't load
Replies: 16
Views: 1825

Re: C64 NeoHabitat Disk-B won't load

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