Search found 76 matches

by R4MS
Tue Oct 15, 2019 5:39 pm
Forum: MiSTer
Topic: Minimig (Amiga) core discussion
Replies: 1004
Views: 173921

Re: Minimig (Amiga) core discussion

OK. You're right. The Product ID is 16. The 1 in 5020/1 displayed in Sysinfo is the optional serial number. The explanation in the HRM is This is for the manufacturer’s use and can contain anything at all. The main intent is to allow a manufacturer to uniquely identify individual cards, but it can c...
by R4MS
Mon Oct 14, 2019 11:27 pm
Forum: MiSTer
Topic: Minimig (Amiga) core discussion
Replies: 1004
Views: 173921

Re: Minimig (Amiga) core discussion

Serial ID on MiSTer is 1 or 2, which does not exist in that list.
by R4MS
Mon Oct 14, 2019 9:17 pm
Forum: MiSTer
Topic: Minimig (Amiga) core discussion
Replies: 1004
Views: 173921

Re: Minimig (Amiga) core discussion

I can think of two (more or less) intended ways to detect a MiSTer: 1. When a hdd is autodetected (eg. with HDToolBox), the manufacturer will be "MiSTer". 2. The autoconfig ID of the memory expansion is 5020 / 1. I did not find this ID in the http://amiga.resource.cx database. Might be the...
by R4MS
Sat Sep 28, 2019 6:12 pm
Forum: MiSTer
Topic: Minimig (Amiga) core discussion
Replies: 1004
Views: 173921

Re: Minimig (Amiga) core discussion

z00pster wrote:Should 256M memory mode work on a MiSTer with 64MB? I've got 8MB FAST working but not anything higher.


256M is independent of external RAM module. But you have to select the 68020 to be able to access the memory, since it is above the 24 bit address range of the 68000.
by R4MS
Sun Sep 22, 2019 4:29 pm
Forum: MiSTer
Topic: exfat performance
Replies: 5
Views: 549

Re: exfat performance

OK, you were right. Got a good 10 MB/s when using bs=64k. Still, I'll be using ext4 for data to exclude strange behavior of the file system.
by R4MS
Sun Sep 22, 2019 4:28 pm
Forum: MiSTer
Topic: Minimig (Amiga) core discussion
Replies: 1004
Views: 173921

Re: Minimig (Amiga) core discussion

Make sure to (newly) set a valid memory mode in the new release. I also have to reset MiSTer from time to time, because crashes at startup or the video is corrupted.
by R4MS
Sun Sep 22, 2019 3:15 pm
Forum: MiSTer
Topic: exfat performance
Replies: 5
Views: 549

Re: exfat performance

Sorgelig wrote:By the way, did you try to write to pre-allocated/existing file? .

Yes, no difference with dd. But when copying a file, the speed can top 10MB/s.
by R4MS
Sun Sep 22, 2019 2:18 pm
Forum: MiSTer
Topic: Minimig (Amiga) core discussion
Replies: 1004
Views: 173921

Re: Minimig (Amiga) core discussion

Did you try to only use the 256MB fastRAM option? Moreover you could try to disable both turbo modes, which slows down access to the ram module. Also reading the first post of the MiSTer updates thread does not hurt: MiSTer updates and changelog This thread is strictly for Cores and HW updates! No d...
by R4MS
Sun Sep 22, 2019 2:15 pm
Forum: MiSTer
Topic: exfat performance
Replies: 5
Views: 549

exfat performance

I was playing around while investigating the IDE problems in minimig and did some performance tests. dd if=/dev/zero of=/media/fat/testfile.tmp bs=1k count=$((40*1024)) writes an empty 40MB file... on the exfat partition the speed is less than 400K per second. On an ext4 partition on the same SD car...
by R4MS
Sun Sep 22, 2019 2:00 pm
Forum: MiSTer
Topic: Minimig (Amiga) core discussion
Replies: 1004
Views: 173921

Re: Minimig (Amiga) core discussion

I'm trying to figure out how to add the displacement to the stack pointer. I've also tried that a while back, but finally gave up. I figured, that it might be good to understand die original (and much shorter) 68000 implementation of tg68k ( https://opencores.org/projects/tg68) first. Right now, I ...
by R4MS
Sun Sep 22, 2019 12:52 am
Forum: MiSTer
Topic: Minimig (Amiga) core discussion
Replies: 1004
Views: 173921

Re: Minimig (Amiga) core discussion

BlockABoots wrote:Was the option to adjust the size of the screen removed from recent versions of Minimig?, i dont see it in the Audio & video options anymore?

I just used it today on the current release.
by R4MS
Sat Sep 21, 2019 11:16 pm
Forum: MiSTer
Topic: Minimig (Amiga) core discussion
Replies: 1004
Views: 173921

Re: Minimig (Amiga) core discussion

apolkosnik wrote: tg68k .... add validation or unit tests.

Toni Wilen has a developed a testsuit for 68k cpus: http://eab.abime.net/showthread.php?t=98747
by R4MS
Sat Sep 21, 2019 10:49 pm
Forum: MiSTer
Topic: Minimig (Amiga) core discussion
Replies: 1004
Views: 173921

Re: Minimig (Amiga) core discussion

I'm not sure if there any apps not able to use >24bit space. There have been early apps that used the upper byte of the address registers to store stuff. Those will obviously not work on a system with a 32bit address bus. If tg68k implements this correctly, 68000 and 68010 should only use 24 bits f...
by R4MS
Sat Sep 21, 2019 4:55 pm
Forum: MiSTer
Topic: Minimig (Amiga) core discussion
Replies: 1004
Views: 173921

Re: Minimig (Amiga) core discussion

Should be OK. We only have to disable the 8M and 16M Autoconf Memory boards in tg68k.
by R4MS
Sat Sep 21, 2019 12:21 am
Forum: MiSTer
Topic: Minimig (Amiga) core discussion
Replies: 1004
Views: 173921

Re: Minimig (Amiga) core discussion

sonycman wrote:Something was wrong with the lowered freqs?


Yes, Minimig was slower than it needed to be.
by R4MS
Fri Sep 20, 2019 11:52 am
Forum: MiSTer
Topic: Minimig (Amiga) core discussion
Replies: 1004
Views: 173921

Re: Minimig (Amiga) core discussion

Any idea?

Minimig on MiSTer has IDE timing problems, also in versions before September. Might be worse now, because of the faster memory access. I'll have a closer look at it, as soon as it gets colder outside (in central europe).
by R4MS
Mon Sep 16, 2019 7:55 pm
Forum: MiSTer
Topic: Minimig (Amiga) core discussion
Replies: 1004
Views: 173921

Re: Minimig (Amiga) core discussion

Turbo Chip Mem only has an effect, if 2MB Chip and AGA are selected. Otherwise that option does not do anything.
by R4MS
Sun Sep 15, 2019 3:40 pm
Forum: MiSTer
Topic: Minimig (Amiga) core discussion
Replies: 1004
Views: 173921

Re: Minimig (Amiga) core discussion

Minimig on MiSTer supports reading and writing to 880K ADFs.
by R4MS
Fri Sep 06, 2019 3:05 pm
Forum: MiSTer
Topic: Minimig (Amiga) core discussion
Replies: 1004
Views: 173921

Re: Minimig (Amiga) core discussion

There are several problems with IDE... That's the next thing on my list, if everything works out I'll have some time soon. I've got the same issue with HDToolBox on 3.1.4.
by R4MS
Thu Aug 29, 2019 9:15 pm
Forum: MiSTer
Topic: Minimig (Amiga) core discussion
Replies: 1004
Views: 173921

Re: Minimig (Amiga) core discussion

I guess, I've been the last to work on that code. The memory layout is as follows: Amiga - SD 0-$20 - 0 -$20 $A0-FF - $20-80 Bit 4 is used in this line in minimig_sram_bridge.v to initiate memory access wire enable = |bank[7:0]; // indicates memory access cycle The amount of Slow Ram is handled in g...
by R4MS
Mon Aug 05, 2019 11:44 am
Forum: MiSTer
Topic: Minimig (Amiga) core discussion
Replies: 1004
Views: 173921

Re: Minimig (Amiga) core discussion

Main_Mister does do this. It's not hard to find in the sources.
by R4MS
Mon Jul 29, 2019 12:14 pm
Forum: MiSTer
Topic: Minimig (Amiga) core discussion
Replies: 1004
Views: 173921

Re: Minimig (Amiga) core discussion

I get a black picture on all monitors with composite_sync=0. Setting it to 1 works.
by R4MS
Sun Jul 28, 2019 12:04 pm
Forum: MiSTer
Topic: Minimig (Amiga) core discussion
Replies: 1004
Views: 173921

Re: Minimig (Amiga) core discussion

Piacenti wrote:How to output 480p VGA signal on Minimig?

Setting

forced_scandoubler=1
composite_sync=1
vga_scaler=1

works for all my monitors. Also for those which can not deal with 15kHz.
by R4MS
Wed Jul 24, 2019 10:01 pm
Forum: MiSTer
Topic: Minimig (Amiga) core discussion
Replies: 1004
Views: 173921

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.
by R4MS
Wed Jul 17, 2019 9:57 pm
Forum: MiSTer
Topic: Minimig (Amiga) core discussion
Replies: 1004
Views: 173921

Re: Minimig (Amiga) core discussion

I'm used to think in base 1024, so I get slightly confused by odd numbers greater than 1.

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