AGA - NEXUS7 Demo hangs mid way

avongil · 15 December 2022, 16:36

I have yet to successfully run an AGA demo on my A1200 for some reason.

Is there a trick to playing the Nexus7 demo? I started up without startup options, then ran nexus.exe from the command line
seems to not get past that spinning light ball about 2.5 min into the demo
A1200 with 40mhz 030 and 32 MB of ram

Eventually the music runs out and there is just eerie background noise and the spinning light ball. It is stuck here: https://nextcloud.independence18040....g2Xaa54EJ9tsaY

Predseda · 15 December 2022, 16:44

Did you disable AGA chipset and caches before boot?

avongil · 15 December 2022, 16:56

well, I guess I need to be schooled again..

Nope, didn't run any patch. Did I miss the instructions on running the demo some place? Im running WB 3.1 with the original 1995 roms. Where do I find the patch?

TCD · 15 December 2022, 17:07

Quote:

Originally Posted by avongil

Nope, didn't run any patch. Did I miss the instructions on running the demo some place? Im running WB 3.1 with the original 1995 roms. Where do I find the patch?

Hopefully this video can help: [ Show youtube player ]

nikosidis · 15 December 2022, 17:29

That demo runs perfect on my A1200 Rom 3.1 and A4000. Rom 3.0 I run it from HDD the file is downloaded from Pouet.net
This is the best AGA demo for standard A1200.
It must be your accelerator. Can you disable the accelerator?

I have Blizzard IV 030/50 and there the demo runs perfect but Blizzard IV is the most compatible and best Amiga 030 accelerator

nikosidis · 15 December 2022, 17:30

Quote:

Originally Posted by Predseda

Did you disable AGA chipset and caches before boot?

This is AGA demo so it is not so smart to disable it

Predseda · 15 December 2022, 17:30

Ooops!

amigasith · 15 December 2022, 22:16

Freezes somewhere right in the middle of the demo could also be caused by missing timing fixes on the A1200 mainboard. I had a similar issue back in 2015 (see here) and the solution for me was to apply the famous timing fixes.

I noticed that the link that I posted to Ian's website in my old post is no longer working. Here is a working one: https://ianstedman.co.uk/amiga-relat...erboard-fixes/

lilwshu · 15 December 2022, 22:53

Nexus 7 seems fussy about accelerators, I have had your issue in the past and using WHDload to run it fixed it - http://whdload.de/demos/Andromeda_Nexus7.html

avongil · 16 December 2022, 00:29

So I thought this machine had the timing fixes, but the link above shows three that I have not come across for rev2b boards. I have an apollo 1230 in there.

No go turning the cache off, im looking at the light ball now.

Will read up on these timing fixes and get back.

avongil · 16 December 2022, 00:33

as for WHDload, I cant load too much software now. It's painfully slow over serial. I'm waiting on some parts before I do a re-install on a CF. Currently running on an old hard drive I found in my parts bin. Rookie mistake too - my Workbench partition is 8mb and full. Just trying to do a shakedown on the old girl before I commit to setting a final 3.2 setup on a CF.

avongil · 16 December 2022, 00:47

eld-machinist demo fails to even load...

---

So, im going to go and review those timing fixes.

UberFreak · 16 December 2022, 01:16

Quote:

Originally Posted by avongil

eld-machinist demo fails to even load...

To run this one (and other Elude demos) you will need a 68060 CPU.

avongil · 16 December 2022, 01:26

Ok thank you. is this info anyplace?

I am rather happy this one works

I stare at it constantly.

UberFreak · 16 December 2022, 04:23

Some demos include a text file (nfo) with info about minimum requirements.
In general, nearly every AGA demo done in the last 20 years is targeting the 68060 CPU.

avongil · 10 January 2023, 01:10

OK, so I applied the remaining timing fixes and no-go. Nexus7 still fails

Any other ideas?

koobo · 10 January 2023, 06:03

Quote:

Originally Posted by avongil

OK, so I applied the remaining timing fixes and no-go. Nexus7 still fails

Any other ideas?

Back in the day Nexus7 didn't work on my A1200 until I ripped out the accelerator board. The 68030/28MHz board had slower chip ram access speed than the plain unaccelerated A1200, which for Nexus7 made the difference.

redblade · 10 January 2023, 06:57

Quote:

Originally Posted by koobo

Back in the day Nexus7 didn't work on my A1200 until I ripped out the accelerator board. The 68030/28MHz board had slower chip ram access speed than the plain unaccelerated A1200, which for Nexus7 made the difference.

Any of the Electrical Engineers want to explain this?? I'm guessing this is why Blizzard were able to charge a premium compared to some of the other accelerator boards? Is this because of slower RAM speed that the cards used or poor crystals?

avongil · 10 January 2023, 14:24

interesting for sure!
will try later doing it that way.

avongil · 10 January 2023, 14:25

wonder if the terrible fire is any better than this apollo. I really hate it!

15 December 2022, 16:36	#1
avongil Registered User Join Date: Jul 2018 Location: Easton Posts: 81	AGA - NEXUS7 Demo hangs mid way I have yet to successfully run an AGA demo on my A1200 for some reason. Is there a trick to playing the Nexus7 demo? I started up without startup options, then ran nexus.exe from the command line seems to not get past that spinning light ball about 2.5 min into the demo A1200 with 40mhz 030 and 32 MB of ram Eventually the music runs out and there is just eerie background noise and the spinning light ball. It is stuck here: https://nextcloud.independence18040....g2Xaa54EJ9tsaY

15 December 2022, 17:29	#5
nikosidis Registered User Join Date: Jan 2020 Location: oslo/norway Posts: 1,607	That demo runs perfect on my A1200 Rom 3.1 and A4000. Rom 3.0 I run it from HDD the file is downloaded from Pouet.net This is the best AGA demo for standard A1200. It must be your accelerator. Can you disable the accelerator? I have Blizzard IV 030/50 and there the demo runs perfect but Blizzard IV is the most compatible and best Amiga 030 accelerator Last edited by nikosidis; 15 December 2022 at 17:34.

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15 December 2022, 16:44	#2
Predseda Puttymoon inhabitant Join Date: Mar 2007 Location: Tromaville Age: 46 Posts: 7,545	Did you disable AGA chipset and caches before boot?

15 December 2022, 16:56	#3
avongil Registered User Join Date: Jul 2018 Location: Easton Posts: 81	well, I guess I need to be schooled again.. Nope, didn't run any patch. Did I miss the instructions on running the demo some place? Im running WB 3.1 with the original 1995 roms. Where do I find the patch?

15 December 2022, 17:30	#7
Predseda Puttymoon inhabitant Join Date: Mar 2007 Location: Tromaville Age: 46 Posts: 7,545	Ooops!

15 December 2022, 22:16	#8
amigasith Registered User Join Date: Jan 2013 Location: Wild South / Germany Age: 48 Posts: 271	Freezes somewhere right in the middle of the demo could also be caused by missing timing fixes on the A1200 mainboard. I had a similar issue back in 2015 (see here) and the solution for me was to apply the famous timing fixes. I noticed that the link that I posted to Ian's website in my old post is no longer working. Here is a working one: https://ianstedman.co.uk/amiga-relat...erboard-fixes/

15 December 2022, 22:53	#9
lilwshu Registered User Join Date: Mar 2020 Location: UK Posts: 243	Nexus 7 seems fussy about accelerators, I have had your issue in the past and using WHDload to run it fixed it - http://whdload.de/demos/Andromeda_Nexus7.html

16 December 2022, 00:29	#10
avongil Registered User Join Date: Jul 2018 Location: Easton Posts: 81	So I thought this machine had the timing fixes, but the link above shows three that I have not come across for rev2b boards. I have an apollo 1230 in there. No go turning the cache off, im looking at the light ball now. Will read up on these timing fixes and get back.

16 December 2022, 00:33	#11
avongil Registered User Join Date: Jul 2018 Location: Easton Posts: 81	as for WHDload, I cant load too much software now. It's painfully slow over serial. I'm waiting on some parts before I do a re-install on a CF. Currently running on an old hard drive I found in my parts bin. Rookie mistake too - my Workbench partition is 8mb and full. Just trying to do a shakedown on the old girl before I commit to setting a final 3.2 setup on a CF.

16 December 2022, 00:47	#12
avongil Registered User Join Date: Jul 2018 Location: Easton Posts: 81	eld-machinist demo fails to even load... --- So, im going to go and review those timing fixes.

16 December 2022, 01:26	#14
avongil Registered User Join Date: Jul 2018 Location: Easton Posts: 81	Ok thank you. is this info anyplace? I am rather happy this one works I stare at it constantly.

16 December 2022, 04:23	#15
UberFreak Registered User Join Date: Sep 2009 Location: the world Posts: 439	Some demos include a text file (nfo) with info about minimum requirements. In general, nearly every AGA demo done in the last 20 years is targeting the 68060 CPU.

10 January 2023, 01:10	#16
avongil Registered User Join Date: Jul 2018 Location: Easton Posts: 81	OK, so I applied the remaining timing fixes and no-go. Nexus7 still fails Any other ideas?

10 January 2023, 14:24	#19
avongil Registered User Join Date: Jul 2018 Location: Easton Posts: 81	interesting for sure! will try later doing it that way.

10 January 2023, 14:25	#20
avongil Registered User Join Date: Jul 2018 Location: Easton Posts: 81	wonder if the terrible fire is any better than this apollo. I really hate it!

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