Zorro III Bus Specifications wanted - Page 11

tnt23 · 09 March 2010, 18:13

Quote:

Originally Posted by FrenchShark

I had a quick look at the Z3 spec.
Do you support Multiple Cycle Transfer ?
If not, can it be the issue with your board especially when the CPU cache does some burst reads or writes?
Can you disable the caches and see if it still fails ?

I've written a simple C test doing all sorts of reads and writes (byte, word and longword), and also a misaligned read/write access, like 4 bytes starting from an odd address. Found another bug with SDRAM DQM lines, but the OS would still fail to use Z3 RAM as it should.

However, disabling CPU caches helped! I have managed to run a dozen of DOpuses (quickly running out of 4M of fast RAM), and a WHDloaded 9Fingers on top of that which seems to be running in Z3 RAM.

(The demo failed after a while reporting "Access Fault" ($B008) at PC = $40F7DF30 (ExpMem $4f30). Instruction stream fault on $DC6A006C.)

So the problem is somehow related to CPU caches.

Shadowfire · 10 March 2010, 01:33

turn caches on, turn cache burst access off

tnt23 · 10 March 2010, 08:54

Quote:

Originally Posted by Shadowfire

turn caches on, turn cache burst access off

Not sure how do I do that? Early Startup only has one checkbox 'Disable CPU caches', and if it is set, the system won't boot.

zipper · 10 March 2010, 09:00

http://aminet.net/util/wb/SystemPrefs.lha controls the caches via a GUI.

tnt23 · 10 March 2010, 09:10

Quote:

Originally Posted by zipper

http://aminet.net/util/wb/SystemPrefs.lha controls the caches via a GUI.

Ah, thanks. I ran a search here on EAB and now know the CLI command CPU can also be used for that

tnt23 · 11 March 2010, 09:56

While the design has been filed to the state when the system boots more or less stable with 2M Chip RAM + 16M Zorro RAM, here are some SysInfo V3.24 figures.

ICache ON, DCache ON, IBurst ON, DBurst OFF (default after boot):

Code:

Dhrystones 2275
MIPS 2.37
Chip Speed vs A600 5.14

ICache ON, DCache ON, IBurst ON, DBurst ON:

Code:

Dhrystones 2276
MIPS 2.37
Chip Speed vs A600 5.14

ICache OFF, DCache OFF, IBurst OFF, DBurst OFF:

Code:

Dhrystones 1657
MIPS 1.72
Chip Speed vs A600 2.51

With memory clocked at 100MHz and all caches and bursts ON:

Code:

Dhrystones 2861
MIPS 2.98
Chip Speed vs A600 5.14

Bustest results:

Code:

BusSpeedTest 0.19 (mlelstv)   Buffer:     262144 Bytes, Alignment: 32768
========================================================================
memtype   addr       op         cycle     calib         bandwidth
user      $40300000  readw     325.9 ns   normal       6.1 * 10^6 byte/s
user      $40300000  readl     491.8 ns   normal       8.1 * 10^6 byte/s
user      $40300000  readm     460.1 ns   normal       8.7 * 10^6 byte/s
user      $40300000  writew    374.7 ns   normal       5.3 * 10^6 byte/s
user      $40300000  writel    373.1 ns   normal      10.7 * 10^6 byte/s
user      $40300000  writem    333.0 ns   normal      12.0 * 10^6 byte/s

tnt23 · 12 March 2010, 16:40

Last night got 64 megabyte memory chip, soldered it in place today and hacked the core to accomodate bigger RAM size:

alexh · 12 March 2010, 17:58

[mr burns voice] Excellent [/mr burns voice]

Jope · 12 March 2010, 18:15

Yarrr, this be pleasing to me eye.

rkauer · 12 March 2010, 19:00

rkauer rubs his eyes: 64Mb CHIP memory?????????

tnt23 · 12 March 2010, 19:20

No no only 2M of Chip RAM is installed as can be (hardly) seen on the first picture

The rest four SIMM banks are empty.

I guess I'll go and post a pic for Zetr0

DarrenHD · 12 March 2010, 23:40

Quote:

Originally Posted by tnt23

No no only 2M of Chip RAM is installed as can be (hardly) seen on the first picture

The rest four SIMM banks are empty.

I guess I'll go and post a pic for Zetr0

Awesome work!! I want one :-) hehe

kriz · 13 March 2010, 16:39

Good work!!!

jimbob005 · 13 March 2010, 18:57

how much has this cost you to make ???

tnt23 · 13 March 2010, 20:07

Quote:

Originally Posted by jimbob005

how much has this cost you to make ???

Something around $130 for PCB and components.

rkauer · 14 March 2010, 07:13

That's make something like 150 (USD?) for a mounted board ready to plug-in?

If so, I'm in.

janik · 15 March 2010, 09:27

Looks good! I'm intrested as well for a price around that much.

arnljot · 15 March 2010, 10:04

If you ever assemble and sell this card, I'm in.

alexh · 15 March 2010, 10:12

I doubt he'd sell this card. It was just a prototype. I'm sure once the design is perfected then the costs can be lowered, plus there are NRE costs involved with prototypes which can be averaged to a very low sum when you're making larger numbers.

While 64Mbytes is a lot in Amiga terms, it is enough to get the majority of Zorro III owners digging into their wallets?

arnljot · 15 March 2010, 16:46

Just after posted, I realised that I'd worded myself poorly.

What I meant was if he designs a card for a production run. Preferably 256MB or more. :-.)

12 March 2010, 19:20	#211
tnt23 Registered User Join Date: Feb 2008 Location: Saint-Petersburg / Russia Posts: 324	No no only 2M of Chip RAM is installed as can be (hardly) seen on the first picture The rest four SIMM banks are empty. I guess I'll go and post a pic for Zetr0 Last edited by tnt23; 12 March 2010 at 19:28.

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Amiga 3000 Zorro Bus Problems	Ze_ro	support.Hardware	18	30 April 2021 06:27
Wanted - A4000 Tower case and Zorro bus board	AmigaFun	MarketPlace	8	03 June 2011 13:03
Zorro Bus Termination...	chiark	support.Hardware	3	15 October 2010 09:50
PCMCIA card reader in Zorro bus	protek	Hardware mods	17	06 November 2009 00:46
Zorro II Card - Zorro III Slot ?	THX1138	support.Hardware	4	03 May 2003 11:03

10 March 2010, 01:33	#202
Shadowfire Registered User Join Date: Aug 2001 Location: Connecticut USA Posts: 617	turn caches on, turn cache burst access off

10 March 2010, 09:00	#204
zipper Registered User Join Date: Mar 2004 Location: finland Posts: 1,843	http://aminet.net/util/wb/SystemPrefs.lha controls the caches via a GUI.

12 March 2010, 16:40	#207
tnt23 Registered User Join Date: Feb 2008 Location: Saint-Petersburg / Russia Posts: 324	Last night got 64 megabyte memory chip, soldered it in place today and hacked the core to accomodate bigger RAM size:

12 March 2010, 17:58	#208
alexh Thalion Webshrine Join Date: Jan 2004 Location: Oxford Posts: 14,463	[mr burns voice] Excellent [/mr burns voice]

12 March 2010, 18:15	#209
Jope - Join Date: Jul 2003 Location: Helsinki / Finland Age: 43 Posts: 9,911	Yarrr, this be pleasing to me eye.

12 March 2010, 19:00	#210
rkauer I hate potatos and shirts Join Date: Oct 2007 Location: Sao Leopoldo / Brazil Age: 58 Posts: 3,482	rkauer rubs his eyes: 64Mb CHIP memory?????????

13 March 2010, 16:39	#213
kriz Junior Member Join Date: Sep 2001 Location: No(R)Way Age: 42 Posts: 3,222	Good work!!!

13 March 2010, 18:57	#214
jimbob005 Registered User Join Date: May 2007 Location: swadlincote, uk Age: 43 Posts: 226	how much has this cost you to make ???

14 March 2010, 07:13	#216
rkauer I hate potatos and shirts Join Date: Oct 2007 Location: Sao Leopoldo / Brazil Age: 58 Posts: 3,482	That's make something like 150 (USD?) for a mounted board ready to plug-in? If so, I'm in.

15 March 2010, 09:27	#217
janik Hardware tinkerer Join Date: Feb 2010 Location: Leppävesi / Finland Age: 45 Posts: 20	Looks good! I'm intrested as well for a price around that much.

15 March 2010, 10:04	#218
arnljot Registered User Join Date: Jul 2008 Location: Oslo Posts: 76	If you ever assemble and sell this card, I'm in.

15 March 2010, 10:12	#219
alexh Thalion Webshrine Join Date: Jan 2004 Location: Oxford Posts: 14,463	I doubt he'd sell this card. It was just a prototype. I'm sure once the design is perfected then the costs can be lowered, plus there are NRE costs involved with prototypes which can be averaged to a very low sum when you're making larger numbers. While 64Mbytes is a lot in Amiga terms, it is enough to get the majority of Zorro III owners digging into their wallets?

15 March 2010, 16:46	#220
arnljot Registered User Join Date: Jul 2008 Location: Oslo Posts: 76	Just after posted, I realised that I'd worded myself poorly. What I meant was if he designs a card for a production run. Preferably 256MB or more. :-.)

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)