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SCSI2SD Adapter Works!


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#101 mizapf OFFLINE  

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Posted Sat Feb 24, 2018 10:59 AM

Remember that you can trustfully test MDOS against HFDC using MAME, since that configuration is indeed implemented - unless you expect some behavior outside of the specification (e.g. timing issues due to the used circuits). What we don't have is a SCSI controller emulation.



#102 InsaneMultitasker OFFLINE  

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Posted Sat Feb 24, 2018 1:03 PM

thanks Michael.  MAME is a great avenue for testing.  The only real-world testing that is 'absolutely' necessary is to confirm that both cards work together in the same system.  I removed the HFDC from my system to use it for repair purposes long ago, and never got around to putting it back in. 

 

Oh, and not to forget your implementation of the larger Horizon RAMdisk, that will allow us to test the 'hard drive' implementation for the RAMdisk, which doesn't require a SCSI card but relies upon the common HFDC and SCSI routine framework.


Edited by InsaneMultitasker, Sat Feb 24, 2018 1:05 PM.


#103 InsaneMultitasker OFFLINE  

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Posted Mon Feb 26, 2018 1:02 PM

I was able to successfully copy Heatwave BBS files to the SCSI2SD device and even had it running for a short period on my spare system.  I am focused on fixing a few more MDOS-related things before I return to either the BBS or TIMXT related code.  Since the latter efforts are dependent on the functionality of the second system, this extra work is not a typical 'distraction'.  What I hope to do is move Heatwave to my spare system with SCSI2SD and leverage the updated OS to boost the overall system speed.  :)



#104 mizapf OFFLINE  

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Posted Mon Feb 26, 2018 4:47 PM

I remember such a discussion some time ago, and I am pretty sure it is 6.50. I'm currently away from my Geneve, so I cannot prove it right now.

 

It is MDOS 6.50.



#105 InsaneMultitasker OFFLINE  

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Posted Sun Mar 4, 2018 2:07 PM

Well, I've sent two messages inquiring about the interrupt being generated by the SCSI2SD device.  So far no response.  I'll finish patching the MDOS interrupt handler once I'm sure the code won't create a new problem. I'm still trying to find the platter or image containing the high density cluster fixes; I have a disk image with the file, but no corresponding compiled image.  Same thing is true of some other DSR code I've been trying to find.  I'm hoping I didn't lose that work.

 

On the plus side, assembling MDOS is now 35-40% faster when using MDOS 6.70RC2 versus 6.50, with the same SCSI2SD drive.  I'm considering copying the low level IO code into the Geneve's 32K fast SRAM to test performance.  The current routines run from the 512K on-board DRAM.  In fact, I am curious to know whether or not running the file IO routines from the fast SRAM would speed things up another 25-50%. 



#106 Schmitzi OFFLINE  

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Posted Tue Mar 5, 2019 2:02 PM

Hi,

 

I got my SCSI2SD (AmigaKit) running today. Works  :lust:

 

Does anybody know which version of the Snug ASCSI2 is the latest ? (Eprom/DSR)

 

xXx



#107 mizapf OFFLINE  

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Posted Tue Mar 5, 2019 3:06 PM

My card (the MACH chip) is labeled "V2.06", March 18, 1999.



#108 Schmitzi OFFLINE  

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Posted Tue Mar 5, 2019 11:20 PM

My card (the MACH chip) is labeled "V2.06", March 18, 1999.

 

ah, OK. so I have the same version, and my Eprom is "8.4.99"

But what about the DSR1,6-02A ... ff  ?

 

 

Attached File  SNUG-ASCSI2-RMS-01-NOL.jpg   2.37MB   1 downloads



#109 OLD CS1 OFFLINE  

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Posted Tue Mar 5, 2019 11:31 PM

Purty looking SCSI card, there.



#110 Nick99 OFFLINE  

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Posted Wed Mar 6, 2019 10:25 AM

Purty looking SCSI card, there.

 

Yeah, it would be nice to get one to my Geneve...  :_(



#111 Schmitzi OFFLINE  

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Posted Wed Mar 6, 2019 3:51 PM

 

Yeah, it would be nice to get one to my Geneve...  :_(

 

You can have my left arm :grin:



#112 Shift838 OFFLINE  

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Posted Wed Mar 6, 2019 7:31 PM

 

Yeah, it would be nice to get one to my Geneve...  :_(

 

i have one running on my Geneve and it works great with my WHT SCSI.  I bought mine though when they were around $60 bucks shipped.


Edited by Shift838, Wed Mar 6, 2019 7:33 PM.


#113 Ksarul OFFLINE  

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Posted Wed Mar 6, 2019 9:38 PM

Look for one of the Blue Edition cards to see if the DSR/Mach chips have the same revisions. That was the final batch of new cards. I'll have to pull mine out to check (assuming I have time this weekend).



#114 Schmitzi OFFLINE  

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Posted Thu Mar 7, 2019 4:21 AM

Look for one of the Blue Edition cards to see if the DSR/Mach chips have the same revisions. That was the final batch of new cards. I'll have to pull mine out to check (assuming I have time this weekend).

 

For the "Mach" chip on the SNUG´s ASCSI2,

 

I have the v2.06 / 18.Mar.1999 as you can see in the pics,

and I know that a v2.07 exists, dated 03.Sep.1999

 

(But I think you are talking about the WHT SCSI here)



#115 Ksarul OFFLINE  

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Posted Thu Mar 7, 2019 6:55 AM

The very last group of ASCSI2 cards were called the Blue Edition. IIRC, only about 15 of them were made. I have one of those as well as one of the earlier edition cards shown in your picture above, Schmitzi.  :)



#116 Opry99er OFFLINE  

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Posted Thu Mar 7, 2019 11:19 AM

Any chance of more being made? I've been using SCSI on my old Macintosh Plus recently and I'm very much enjoying the interfacing possibilities. :)




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