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Re: Gryphon 68030 [message #784 is a reply to message #783]

Sun, 12 June 2016 07:13

lynchaj
Messages: 1080
Registered: June 2016

Senior Member

Hi Dave
OK looks good to go with the CPLD. I like the idea of some spare logic capacity since the 512K SRAM would require a bit of decoding and swap logic to get it to replace the Flash on command. My concern is to keep the project focused and not introduce too many changes at once or it will blow up into massive complexity. Lets get what we have working first and then modify something we know works. The bus, more advanced CPUs, DMA, etc. can wait for now.

While others are working on reviewing the schematics, making the CPLD changes, etc. I will start on replicating the Gryphon 1.0 PCB layout so we can verify part footprints. There will have to be some differences because the Gryphon specified parts like the stacked 9 pin dual male DB connectors which are unobtainium in KiCAD. Those will have to be replaced with single male DB9s.

Thanks

Andrew Lynch

PS, BTW do we really need 512KB Flash and 1024KB SRAM just to boot this thing? How about a 32KB EEPROM and a pair of 32KB skinny SRAMs instead? Pull the rest of the initialization data from external stores. It is something to consider and may simplify this design a bit -- possibly a 32KB EEPROM for boot only to bring in the DRAM and swap out the EEPROM for an all DRAM system.

[Updated on: Sun, 12 June 2016 07:25]

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[Message index]

		Gryphon 68030 By: lynchaj on Wed, 08 June 2016 13:57
		Re: Gryphon 68030 By: lynchaj on Wed, 08 June 2016 13:58
		Re: Gryphon 68030 By: computerdoc on Thu, 09 June 2016 01:43
		Re: Gryphon 68030 By: lynchaj on Fri, 10 June 2016 03:16
		Re: Gryphon 68030 By: computerdoc on Fri, 10 June 2016 08:56
		Re: Gryphon 68030 By: lynchaj on Fri, 10 June 2016 09:16
		Re: Gryphon 68030 By: yoda on Fri, 10 June 2016 10:46
		Re: Gryphon 68030 By: lynchaj on Fri, 10 June 2016 11:43
		Re: Gryphon 68030 By: yoda on Fri, 10 June 2016 11:49
		Re: Gryphon 68030 By: lynchaj on Fri, 10 June 2016 12:10
		Re: Gryphon 68030 By: yoda on Fri, 10 June 2016 12:24
		Re: Gryphon 68030 By: jcoffman on Fri, 10 June 2016 15:06
		Re: Gryphon 68030 By: will on Sat, 11 June 2016 03:29
		Re: Gryphon 68030 By: yoda on Sat, 11 June 2016 10:43
		Re: Gryphon 68030 By: lynchaj on Sun, 12 June 2016 04:15
		Re: Gryphon 68030 By: yoda on Sun, 12 June 2016 06:36
		Re: Gryphon 68030 By: lynchaj on Sun, 12 June 2016 07:03
		Re: Gryphon 68030 By: lynchaj on Sun, 12 June 2016 07:13
		Re: Gryphon 68030 By: yoda on Sun, 12 June 2016 08:07
		Re: Gryphon 68030 By: yoda on Sun, 12 June 2016 10:26
		Re: Gryphon 68030 By: lynchaj on Mon, 13 June 2016 04:58
		Re: Gryphon 68030 By: lynchaj on Tue, 14 June 2016 03:43
		Re: Gryphon 68030 By: will on Sun, 12 June 2016 16:52
		Re: Gryphon 68030 By: lynchaj on Sun, 12 June 2016 17:16
		Re: Gryphon 68030 By: yoda on Sun, 12 June 2016 18:06
		Re: Gryphon 68030 By: yoda on Sun, 12 June 2016 17:50
		Re: Gryphon 68030 By: will on Sun, 12 June 2016 07:27
		Re: Gryphon 68030 By: yoda on Sun, 12 June 2016 10:19
		Re: Gryphon 68030 By: Andrew B on Sun, 12 June 2016 10:48
		Re: Gryphon 68030 By: lynchaj on Sun, 12 June 2016 17:18
		Re: Gryphon 68030 By: lynchaj on Sun, 12 June 2016 17:40
		Re: Gryphon 68030 By: yoda on Sun, 12 June 2016 17:55
		Re: Gryphon 68030 By: Andrew B on Sun, 12 June 2016 18:05
		Re: Gryphon 68030 By: yoda on Sun, 12 June 2016 18:12
		Re: Gryphon 68030 By: Andrew B on Sun, 12 June 2016 18:30
		Re: Gryphon 68030 By: yoda on Sun, 12 June 2016 20:07
		Re: Gryphon 68030 By: lynchaj on Mon, 13 June 2016 03:22
		Re: Gryphon 68030 By: yoda on Mon, 13 June 2016 08:04
		Re: Gryphon 68030 By: lynchaj on Mon, 13 June 2016 09:17
		Re: Gryphon 68030 By: yoda on Mon, 13 June 2016 09:39
		Re: Gryphon 68030 By: Andrew B on Mon, 13 June 2016 09:59
		Re: Gryphon 68030 By: yoda on Mon, 13 June 2016 10:02
		Re: Gryphon 68030 By: lynchaj on Tue, 14 June 2016 03:18
		Re: Gryphon 68030 By: yoda on Tue, 14 June 2016 06:52
		Re: Gryphon 68030 By: lynchaj on Wed, 15 June 2016 17:36
		Re: Gryphon 68030 By: lynchaj on Thu, 16 June 2016 03:29
		Re: Gryphon 68030 By: lynchaj on Thu, 16 June 2016 03:34
		Re: Gryphon 68030 By: yoda on Thu, 16 June 2016 06:41
		Re: Gryphon 68030 By: lynchaj on Thu, 16 June 2016 08:29
		Re: Gryphon 68030 By: lynchaj on Sat, 18 June 2016 08:38
		Calling on logic equation gurus By: yoda on Fri, 24 June 2016 08:50
		Re: Calling on logic equation gurus By: Andrew B on Fri, 24 June 2016 09:46
		Re: Calling on logic equation gurus By: yoda on Fri, 24 June 2016 11:14
		All: Please review verilog code By: yoda on Fri, 24 June 2016 17:41
		Re: All: Please review verilog code By: lynchaj on Sun, 26 June 2016 13:40
		Re: All: Please review verilog code By: lynchaj on Sun, 26 June 2016 13:44
		Re: All: Please review verilog code By: Andrew B on Mon, 27 June 2016 09:51
		Re: All: Please review verilog code By: lynchaj on Mon, 27 June 2016 11:36
		Re: All: Please review verilog code By: yoda on Mon, 27 June 2016 12:25
		Re: All: Please review verilog code By: lynchaj on Tue, 28 June 2016 03:21
		Re: All: Please review verilog code By: jcoffman on Tue, 28 June 2016 03:29
		Re: All: Please review verilog code By: lynchaj on Tue, 28 June 2016 03:55
		Re: All: Please review verilog code By: yoda on Sun, 26 June 2016 17:02
		Re: All: Please review verilog code By: lynchaj on Mon, 27 June 2016 03:42
		Re: Gryphon 68030 By: lynchaj on Tue, 28 June 2016 15:51
		Re: Gryphon 68030 By: yoda on Tue, 28 June 2016 17:07
		Re: Gryphon 68030 By: lynchaj on Wed, 29 June 2016 03:32
		Re: Gryphon 68030 By: jcoffman on Wed, 29 June 2016 08:01
		Re: Gryphon 68030 By: lynchaj on Wed, 29 June 2016 09:15
		Re: Gryphon 68030 By: lynchaj on Wed, 29 June 2016 16:37
		Re: Gryphon 68030 By: lynchaj on Fri, 08 July 2016 08:18
		Re: Gryphon 68030 By: lynchaj on Sat, 09 July 2016 06:57
		Re: Gryphon 68030 By: lynchaj on Mon, 18 July 2016 17:52
		Re: Gryphon 68030 By: lynchaj on Sat, 23 July 2016 11:56
		Re: Gryphon 68030 By: davetypeguy on Mon, 25 July 2016 10:16
		Re: Gryphon 68030 By: yoda on Mon, 25 July 2016 13:39
		Re: Gryphon 68030 By: davetypeguy on Mon, 25 July 2016 14:46
		Re: Gryphon 68030 By: lynchaj on Tue, 26 July 2016 13:50
		Re: Gryphon 68030 By: lynchaj on Fri, 03 February 2017 05:05
		Re: Gryphon 68030 By: lynchaj on Sat, 04 February 2017 10:23
		Re: Gryphon 68030 By: Andrew B on Sat, 04 February 2017 11:28
		Re: Gryphon 68030 By: computerdoc on Fri, 10 February 2017 02:17
		Re: Gryphon 68030 By: will on Fri, 10 February 2017 03:56
		Re: Gryphon 68030 By: lynchaj on Sat, 11 February 2017 07:19
		Re: Gryphon 68030 By: will on Sat, 11 February 2017 13:20
		Re: Gryphon 68030 By: Andrew B on Sat, 11 February 2017 13:31
		Re: Gryphon 68030 By: lynchaj on Sat, 11 February 2017 13:52
		Re: Gryphon 68030 By: yoda on Sat, 11 February 2017 14:05
		Re: Gryphon 68030 By: will on Sat, 11 February 2017 14:44
		Re: Gryphon 68030 By: computerdoc on Fri, 10 February 2017 02:25
		Re: Gryphon 68030 By: lynchaj on Sat, 11 February 2017 07:06
		Re: Gryphon 68030 By: computerdoc on Sat, 11 February 2017 19:00
		Re: Gryphon 68030 By: lynchaj on Sat, 11 February 2017 08:14
		Re: Gryphon 68030 By: davetypeguy on Sun, 12 February 2017 00:22
		Re: Gryphon 68030 By: yoda on Sun, 12 February 2017 10:52
		Re: Gryphon 68030 By: lynchaj on Sun, 12 February 2017 11:11
		Re: Gryphon 68030 By: Garth on Mon, 13 February 2017 02:07
		Re: Gryphon 68030 By: Andrew B on Fri, 17 February 2017 14:47
		Re: Gryphon 68030 By: denis2342 on Tue, 28 February 2017 06:27
		Re: Gryphon 68030 By: yoda on Tue, 28 February 2017 06:48
		Re: Gryphon 68030 By: denis2342 on Tue, 28 February 2017 07:12
		Re: Gryphon 68030 By: yoda on Tue, 28 February 2017 07:40
		Re: Gryphon 68030 By: will on Tue, 28 February 2017 14:55
		Re: Gryphon 68030 By: denis2342 on Thu, 02 March 2017 20:32
		Re: Gryphon 68030 By: ewout on Fri, 03 March 2017 02:54
		Re: Gryphon 68030 By: lynchaj on Fri, 03 March 2017 03:51
		Re: Gryphon 68030 By: lynchaj on Fri, 03 March 2017 03:54
		Re: Gryphon 68030 By: lynchaj on Mon, 06 March 2017 03:00
		Re: Gryphon 68030 By: ewout on Thu, 09 March 2017 00:58
		Re: Gryphon 68030 By: lynchaj on Thu, 09 March 2017 07:05
		Re: Gryphon 68030 By: lynchaj on Thu, 09 March 2017 07:07
		Re: Gryphon 68030 By: yoda on Thu, 09 March 2017 07:16
		Re: Gryphon 68030 By: ewout on Thu, 09 March 2017 07:33
		Re: Gryphon 68030 By: lynchaj on Thu, 09 March 2017 07:52
		Re: Gryphon 68030 By: yoda on Thu, 09 March 2017 11:50
		Re: Gryphon 68030 By: lynchaj on Thu, 09 March 2017 11:59
		Re: Gryphon 68030 By: yoda on Thu, 09 March 2017 12:32
		Re: Gryphon 68030 By: lynchaj on Thu, 09 March 2017 15:25
		Re: Gryphon 68030 By: yoda on Thu, 09 March 2017 16:01
		Re: Gryphon 68030 By: lynchaj on Thu, 09 March 2017 16:26
		Re: Gryphon 68030 By: yoda on Thu, 09 March 2017 17:13
		Re: Gryphon 68030 By: lynchaj on Fri, 10 March 2017 02:56
		Re: Gryphon 68030 By: yoda on Fri, 10 March 2017 07:52
		Re: Gryphon 68030 By: lynchaj on Fri, 10 March 2017 08:31
		Re: Gryphon 68030 By: lynchaj on Sat, 11 March 2017 05:56
		Re: Gryphon 68030 By: lynchaj on Sat, 11 March 2017 06:13
		Re: Gryphon 68030 By: mikemac on Sat, 11 March 2017 12:30
		Re: Gryphon 68030 By: yoda on Sat, 11 March 2017 12:43
		Re: Gryphon 68030 By: mikemac on Sat, 11 March 2017 14:41
		Re: Gryphon 68030 By: lynchaj on Sun, 12 March 2017 05:21
		Re: Gryphon 68030 By: lynchaj on Sun, 12 March 2017 09:20
		Re: Gryphon 68030 By: lynchaj on Sun, 12 March 2017 10:28
		Re: Gryphon 68030 By: mikemac on Sun, 12 March 2017 14:14
		Re: Gryphon 68030 By: lynchaj on Sun, 12 March 2017 14:34
		Re: Gryphon 68030 By: mikemac on Sun, 12 March 2017 17:40
		Re: Gryphon 68030 By: lynchaj on Mon, 13 March 2017 02:55
		Re: Gryphon 68030 By: lynchaj on Mon, 13 March 2017 05:43
		Re: Gryphon 68030 By: lynchaj on Wed, 15 March 2017 02:54
		Re: Gryphon 68030 By: davetypeguy on Wed, 15 March 2017 09:06
		Re: Gryphon 68030 By: lynchaj on Sat, 11 March 2017 13:00
		Re: Gryphon 68030 By: lynchaj on Sat, 11 March 2017 13:12
		Re: Gryphon 68030 By: yoda on Sat, 11 March 2017 13:23
		Re: Gryphon 68030 By: mikemac on Sat, 08 April 2017 19:59
		Re: Gryphon 68030 By: rhkoolstar on Sat, 08 April 2017 23:27
		Re: Gryphon 68030 By: plasmo on Sun, 09 April 2017 05:32
		Re: Gryphon 68030 By: tobster on Wed, 15 March 2017 13:08
		Re: Gryphon 68030 By: yoda on Wed, 15 March 2017 14:02
		Re: Gryphon 68030 By: lynchaj on Thu, 16 March 2017 13:52
		Re: Gryphon 68030 By: mikemac on Tue, 21 March 2017 09:55
		Re: Gryphon 68030 By: norwestrzh on Tue, 21 March 2017 10:22
		Re: Gryphon 68030 By: yoda on Tue, 21 March 2017 10:46
		Re: Gryphon 68030 By: lynchaj on Thu, 23 March 2017 05:44
		Re: Gryphon 68030 By: lynchaj on Sat, 25 March 2017 06:30
		Re: Gryphon 68030 By: lynchaj on Sat, 25 March 2017 08:03
		Re: Gryphon 68030 By: mikemac on Sat, 25 March 2017 16:19
		Re: Gryphon 68030 By: jcoffman on Sat, 25 March 2017 18:07
		Re: Gryphon 68030 By: mikemac on Sat, 25 March 2017 21:05
		Re: Gryphon 68030 By: yoda on Sun, 26 March 2017 08:32
		Re: Gryphon 68030 By: tobster on Sun, 26 March 2017 02:25
		Re: Gryphon 68030 By: mikemac on Sun, 26 March 2017 09:18
		Re: Gryphon 68030 By: lynchaj on Sun, 26 March 2017 09:47
		Re: Gryphon 68030 By: mikemac on Mon, 27 March 2017 09:18
		Re: Gryphon 68030 By: lynchaj on Mon, 27 March 2017 09:30
		Re: Gryphon 68030 By: mikemac on Thu, 30 March 2017 10:13
		Re: Gryphon 68030 By: lynchaj on Thu, 30 March 2017 10:46
		Re: Gryphon 68030 By: mikemac on Thu, 30 March 2017 11:56
		Re: Gryphon 68030 By: Andrew B on Thu, 30 March 2017 13:50
		Re: Gryphon 68030 By: mikemac on Thu, 30 March 2017 14:03
		Re: Gryphon 68030 By: mikemac on Thu, 30 March 2017 14:37
		Re: Gryphon 68030 By: tingo on Mon, 03 April 2017 13:44
		Re: Gryphon 68030 By: mikemac on Mon, 03 April 2017 15:28
		Re: Gryphon 68030 By: lynchaj on Tue, 04 April 2017 04:02
		Re: Gryphon 68030 By: mikemac on Tue, 04 April 2017 07:50
		Re: Gryphon 68030 By: lynchaj on Fri, 07 April 2017 04:31
		Re: Gryphon 68030 By: rhkoolstar on Sat, 08 April 2017 11:30
		Re: Gryphon 68030 By: lynchaj on Sat, 08 April 2017 11:46
		Re: Gryphon 68030 By: mikemac on Sat, 08 April 2017 12:48
		Re: Gryphon 68030 By: plasmo on Sun, 09 April 2017 20:22
		Re: Gryphon 68030 By: rhkoolstar on Sun, 09 April 2017 23:16
		Re: Gryphon 68030 By: lynchaj on Mon, 10 April 2017 03:00
		Re: Gryphon 68030 By: lynchaj on Mon, 10 April 2017 03:18
		Re: Gryphon 68030 By: plasmo on Mon, 10 April 2017 12:38
		Re: Gryphon 68030 By: commodorejohn on Mon, 17 April 2017 15:14
		Re: Gryphon 68030 By: lynchaj on Tue, 18 April 2017 04:21
		Re: Gryphon 68030 By: yoda on Tue, 18 April 2017 07:04
		Re: Gryphon 68030 By: lynchaj on Tue, 18 April 2017 08:57
		Re: Gryphon 68030 By: yoda on Tue, 18 April 2017 09:53
		Re: Gryphon 68030 By: commodorejohn on Tue, 18 April 2017 09:59
		Re: Gryphon 68030 By: lynchaj on Tue, 18 April 2017 11:35
		Re: Gryphon 68030 By: mikemac on Tue, 18 April 2017 16:48
		Re: Gryphon 68030 By: lynchaj on Tue, 18 April 2017 17:47
		Re: Gryphon 68030 By: lynchaj on Wed, 19 April 2017 02:55
		Re: Gryphon 68030 By: yoda on Wed, 19 April 2017 14:15
		Re: Gryphon 68030 By: lynchaj on Wed, 19 April 2017 15:56
		Re: Gryphon 68030 By: mikemac on Thu, 20 April 2017 11:15
		Re: Gryphon 68030 By: lynchaj on Thu, 20 April 2017 12:05
		Re: Gryphon 68030 By: mikemac on Thu, 20 April 2017 12:33
		Re: Gryphon 68030 By: lynchaj on Thu, 20 April 2017 15:58
		Re: Gryphon 68030 By: mikemac on Thu, 20 April 2017 16:51
		Re: Gryphon 68030 By: lynchaj on Fri, 21 April 2017 02:54
		Re: Gryphon 68030 By: yoda on Fri, 21 April 2017 08:54
		Re: Gryphon 68030 By: lynchaj on Fri, 21 April 2017 09:14
		Re: Gryphon 68030 By: yoda on Fri, 21 April 2017 11:15
		Re: Gryphon 68030 By: lynchaj on Fri, 21 April 2017 12:02
		Re: Gryphon 68030 By: plasmo on Mon, 10 April 2017 12:31

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