Serial speed limit on A500

Antiriad · 27 June 2003, 13:40

What is it exactly? My A500 has a 020 at 16Mhz and yet it only goes up to 33.

Is there any way to up this?

Amiga1992 · 27 June 2003, 17:11

That's strange, my A600 with an 060 can go beyond 115200

Try decreasing tehcolor depth to just two colors, and try again.

You do realize that it might be your PC that is at fault, right? What program are you using? My A600 easily gets onto 115200 but my PC has trouble with this speed sometimes.

Syko · 27 June 2003, 21:21

If it's an original A500 not the + version then 33KB/s is about the limit on the port - faster CPU should allow chip switching to boost that up to 115KB/s, but it's not really worth it if you can use the parallel port instead, as that'll give about 400KB/s

'Course that's just for Amiga-Amiga data x-fer. If it's PC-Amiga then yea, you'll have to stick with serial

and over 33KB/s can get unreliable - higher x-fer but more errors...

Nyarlathotep · 27 June 2003, 22:11

With my standard A500 and Twin Express 57600 without any problem.

Amiga1992 · 28 June 2003, 03:22

Yup, Twin Express is the best serial transfer solution IMO. It gives the best speeds on the PC side. It lets me put the PC up to 115200. It makes my meega happy.

Syko · 28 June 2003, 10:42

Not tried Twin Express, but 8n1.device always did the trick for me...

Antiriad · 28 June 2003, 11:59

Aha... colour depth...i didnt think of that. And yes its a A500+ running OS3.1 with 2MB Chip and 8MB Fast Ram. I was using Amiga Explorer to connect it to the PC.

Last time i tried TwinExpress with the PC, XP didnt seem to like it. Worth having another go tho, even if i prefer AE's nice GUI.

I use Twin Express when connecting my Amigas, but i use Serial for that - i get a lot of packet header errors mind... so you can use a Parallel cable with TE then? And that Amiga=Amiga and Amiga=PC?

Oh and Akira, you have an 060 in your A600??? How on earth? I tried putting in a A1200 030 card in mine and it never worked - im right in thinking that you cant use 1200 accelerators in 600s right?

Oh and Syko - does the 8n1.device improve things? I downloaded this before you even mentioned this

Amiga1992 · 30 June 2003, 06:39

Ho ho ho , that was a typo! I meant to write a 68000 :P

To change the miggy's screen depthm, get yourself the proggy Add44k. Run it many times until your screen is in two colors. Now try Twin Express

No, Twin works only with serial

mtb · 30 June 2003, 21:05

Quote:

Originally posted by Antiriad

I use Twin Express when connecting my Amigas, but i use Serial for that - i get a lot of packet header errors mind...

Me too. But the results were perfect ( they were lha or zipped files, and there is a crc inside archives ).

Syko · 01 July 2003, 20:52

8n1.device is a serial replacemnt, it's on aminet, and as you might guess from the name, you can only use it with a data lenth of 8 bits, no parity and 1 stop bit. I've used it with a bog std A500 w/ 68000 @ 57Kb/s, no errors x-fering between WB1.3 and WinMe, 020/16 should be good for double that (just).

If you are x-fering via serial or parallel to PC, try not to use XP as the way it uses the ports has been changed from 98, Me, NT4 and 2K... so it's a bitch to get working... even running in compatability mode for win95 under XP ain't getting PC2Ami working on parallel - have to get the null-modem cable out and go back to slooow x-fers

Jope · 22 July 2003, 16:25

Quote:

Originally posted by Akira
That's strange, my A600 with an 060 can go beyond 115200

Please tell me more about your 060 equipped A600..

Did you hunt down the A2000 CPU slot signals and hook them up to a B2060?

Amiga1992 · 22 July 2003, 18:57

Whoah there

I corrected myself after that post, it was a typo!

I wish I had an 060 in my A600 :/
MAybe if those guys build the Coldfusion accelerator for the A600, I will be able to have an 060 and more ;D

Jope · 22 July 2003, 23:41

Quote:

Originally posted by Antiriad

Oh and Akira, you have an 060 in your A600??? How on earth? I tried putting in a A1200 030 card in mine and it never worked - im right in thinking that you cant use 1200 accelerators in 600s right?

Did you really try it? Did it smoke?

The belly connectors are totally different.. Where did you plug it in?

A stock A600 doesn't have any other suitable connector for an accel except the CPU itself.. All the A600 accels clip over the 68000 CPU (and are very flakey, because the contact isn't always 100% good)

The only use I can think of for an A600 is a nice demo machine.. Install a few gigs of HD and take a packet of DD disks with you.. You can have the DMS files on the HD and extract them to disks for viewing. :-)

Syko · 23 July 2003, 18:35

The reason the chip clips acc'ls are flacky, is that it is very easy for them to move off centre slightly. If you use double-sided sticky pads too hold them in place, this stops being a problem. :smug

Jope · 23 July 2003, 19:11

Quote:

Originally posted by Syko
The reason the chip clips acc'ls are flacky, is that it is very easy for them to move off centre slightly. If you use double-sided sticky pads too hold them in place, this stops being a problem. :smug

Well, yeah.. I still find it a bit too hacky in my opinion..

Maybe I've just gotten old, but I've started liking the fact that expansions plug where they're supposed to go, instead of clipping on top of / in between chips or hooking test clips to certain pins on the motherboard. :-)

Amiga1992 · 23 July 2003, 19:38

Yes, I would preffer as well something in the A600's expansion slot instead of a mobo oon top of the 68000

Let's wait for the coldfusion accelerator. I will sure make my vote for I seriously want one! (more than for my A1200, actually!)

Syko · 23 July 2003, 20:13

Don't have an A600, but I'm almost certain to mortgage my soul to get the A4000 board!

Jope · 24 July 2003, 14:39

Heh, hope they make it and the product comes into existance. :-)

I always had a dream of someone designing a Fast slot card (A4000/3000) that had an x86 on it with a boot rom that contains an '040 emulator.

Make the emu 100% and you have great speed and great compatibility.

Syko · 25 July 2003, 19:58

The Coldfire CPU runs most 680x0 code natively, Ollie is producing the board with a 68020 binary translator (from Motorola, so it should be decent

) for the few instructions that arn't handled natively. He's hoping to be able to stick translators for 020, 030, or 040 in flashROM - so you can change the emulated chip!

Mick_AKA · 27 July 2003, 00:05

Quote:

Originally posted by Syko
Don't have an A600, but I'm almost certain to mortgage my soul to get the A4000 board!

I would mortgage my soul just to get an A4000 in the uk!

27 June 2003, 13:40	#1
Antiriad The Sacred Armour Of Join Date: Aug 2002 Location: Sussex, UK Age: 44 Posts: 1,141	Serial speed limit on A500 What is it exactly? My A500 has a 020 at 16Mhz and yet it only goes up to 33. Is there any way to up this?

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27 June 2003, 17:11	#2
Amiga1992 Registered User Join Date: May 2001 Location: ? Posts: 19,645	That's strange, my A600 with an 060 can go beyond 115200 Try decreasing tehcolor depth to just two colors, and try again. You do realize that it might be your PC that is at fault, right? What program are you using? My A600 easily gets onto 115200 but my PC has trouble with this speed sometimes.

27 June 2003, 21:21	#3
Syko Now got GSX750F :)) Join Date: Jun 2002 Location: Halifax UK Age: 59 Posts: 584	If it's an original A500 not the + version then 33KB/s is about the limit on the port - faster CPU should allow chip switching to boost that up to 115KB/s, but it's not really worth it if you can use the parallel port instead, as that'll give about 400KB/s 'Course that's just for Amiga-Amiga data x-fer. If it's PC-Amiga then yea, you'll have to stick with serial and over 33KB/s can get unreliable - higher x-fer but more errors...

27 June 2003, 22:11	#4
Nyarlathotep Zone Friend Join Date: May 2002 Location: Italy Posts: 148	With my standard A500 and Twin Express 57600 without any problem.

28 June 2003, 03:22	#5
Amiga1992 Registered User Join Date: May 2001 Location: ? Posts: 19,645	Yup, Twin Express is the best serial transfer solution IMO. It gives the best speeds on the PC side. It lets me put the PC up to 115200. It makes my meega happy.

28 June 2003, 10:42	#6
Syko Now got GSX750F :)) Join Date: Jun 2002 Location: Halifax UK Age: 59 Posts: 584	Not tried Twin Express, but 8n1.device always did the trick for me...

28 June 2003, 11:59	#7
Antiriad The Sacred Armour Of Join Date: Aug 2002 Location: Sussex, UK Age: 44 Posts: 1,141	Aha... colour depth...i didnt think of that. And yes its a A500+ running OS3.1 with 2MB Chip and 8MB Fast Ram. I was using Amiga Explorer to connect it to the PC. Last time i tried TwinExpress with the PC, XP didnt seem to like it. Worth having another go tho, even if i prefer AE's nice GUI. I use Twin Express when connecting my Amigas, but i use Serial for that - i get a lot of packet header errors mind... so you can use a Parallel cable with TE then? And that Amiga=Amiga and Amiga=PC? Oh and Akira, you have an 060 in your A600??? How on earth? I tried putting in a A1200 030 card in mine and it never worked - im right in thinking that you cant use 1200 accelerators in 600s right? Oh and Syko - does the 8n1.device improve things? I downloaded this before you even mentioned this

30 June 2003, 06:39	#8
Amiga1992 Registered User Join Date: May 2001 Location: ? Posts: 19,645	Ho ho ho , that was a typo! I meant to write a 68000 :P To change the miggy's screen depthm, get yourself the proggy Add44k. Run it many times until your screen is in two colors. Now try Twin Express No, Twin works only with serial

01 July 2003, 20:52	#10
Syko Now got GSX750F :)) Join Date: Jun 2002 Location: Halifax UK Age: 59 Posts: 584	8n1.device is a serial replacemnt, it's on aminet, and as you might guess from the name, you can only use it with a data lenth of 8 bits, no parity and 1 stop bit. I've used it with a bog std A500 w/ 68000 @ 57Kb/s, no errors x-fering between WB1.3 and WinMe, 020/16 should be good for double that (just). If you are x-fering via serial or parallel to PC, try not to use XP as the way it uses the ports has been changed from 98, Me, NT4 and 2K... so it's a bitch to get working... even running in compatability mode for win95 under XP ain't getting PC2Ami working on parallel - have to get the null-modem cable out and go back to slooow x-fers

22 July 2003, 18:57	#12
Amiga1992 Registered User Join Date: May 2001 Location: ? Posts: 19,645	Whoah there I corrected myself after that post, it was a typo! I wish I had an 060 in my A600 :/ MAybe if those guys build the Coldfusion accelerator for the A600, I will be able to have an 060 and more ;D

23 July 2003, 18:35	#14
Syko Now got GSX750F :)) Join Date: Jun 2002 Location: Halifax UK Age: 59 Posts: 584	The reason the chip clips acc'ls are flacky, is that it is very easy for them to move off centre slightly. If you use double-sided sticky pads too hold them in place, this stops being a problem. :smug

23 July 2003, 19:38	#16
Amiga1992 Registered User Join Date: May 2001 Location: ? Posts: 19,645	Yes, I would preffer as well something in the A600's expansion slot instead of a mobo oon top of the 68000 Let's wait for the coldfusion accelerator. I will sure make my vote for I seriously want one! (more than for my A1200, actually!)

23 July 2003, 20:13	#17
Syko Now got GSX750F :)) Join Date: Jun 2002 Location: Halifax UK Age: 59 Posts: 584	Don't have an A600, but I'm almost certain to mortgage my soul to get the A4000 board!

24 July 2003, 14:39	#18
Jope - Join Date: Jul 2003 Location: Helsinki / Finland Age: 43 Posts: 9,861	Heh, hope they make it and the product comes into existance. :-) I always had a dream of someone designing a Fast slot card (A4000/3000) that had an x86 on it with a boot rom that contains an '040 emulator. Make the emu 100% and you have great speed and great compatibility.

25 July 2003, 19:58	#19
Syko Now got GSX750F :)) Join Date: Jun 2002 Location: Halifax UK Age: 59 Posts: 584	The Coldfire CPU runs most 680x0 code natively, Ollie is producing the board with a 68020 binary translator (from Motorola, so it should be decent ) for the few instructions that arn't handled natively. He's hoping to be able to stick translators for 020, 030, or 040 in flashROM - so you can change the emulated chip!

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