TF534 + Mem68k

TF534 - 68030 + More RAM Board (More compatible with amiga hardware)

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kulamario
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Re: TF534 + Mem68k

Post by kulamario » Sat Mar 07, 2020 9:52 am

is possible to buy somewhere this Mem68k ?

LADmachining
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Re: TF534 + Mem68k

Post by LADmachining » Sat Mar 07, 2020 8:53 pm

I bought some back in January from the developer on eBay.

https://www.ebay.co.uk/sch/mklfi/m.html ... pg=&_from=

mkl
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Re: TF534 + Mem68k

Post by mkl » Sun Mar 08, 2020 11:20 am

Hi. I'm the one making and selling these, although I have little DRAM chips left. Some amount of v67 pcbs are left.

mkl
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Re: TF534 + Mem68k

Post by mkl » Sun Mar 08, 2020 11:27 am

Is the 68030 on TF able to cache any of the 16-bit ram? Or the KS-ROM?

terriblefire
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Re: TF534 + Mem68k

Post by terriblefire » Sun Mar 08, 2020 11:49 am

mkl wrote:
Sun Mar 08, 2020 11:27 am
Is the 68030 on TF able to cache any of the 16-bit ram? Or the KS-ROM?
By default is doesnt because it caused issues when caching chip ram (or 24 bit DMA area). But you can reprogram the cache control lines in verilog if you wanted to.Its as is is for compatibility purposes.

Personally dont think the cache on the 030 gives you much.
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mkl
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Re: TF534 + Mem68k

Post by mkl » Sun Mar 08, 2020 11:56 am

If it could make the "programmed IO" IDE transfer code loop run from cache and thus get speed on MMUless (no relocation of KS to fastest RAM) 68EC030?

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Re: TF534 + Mem68k

Post by terriblefire » Sun Mar 08, 2020 12:14 pm

mkl wrote:
Sun Mar 08, 2020 11:56 am
If it could make the "programmed IO" IDE transfer code loop run from cache and thus get speed on MMUless (no relocation of KS to fastest RAM) 68EC030?
Thats a pretty specific optimization for a single kickstart though? i'd rather let people customize as required. MMU 030s are really cheap too. like $9.
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mkl
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Re: TF534 + Mem68k

Post by mkl » Fri Apr 10, 2020 1:21 pm

I had 68EC030 (RP40) in mind because I bought 4 pcs cheap on ebay auction.

Running code loops from preloaded instruction cache, I think, would be much faster than loading every instruction word from slow memory every time.

alenppc
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Re: TF534 + Mem68k

Post by alenppc » Sun Apr 12, 2020 12:18 am

mkl wrote:
Sun Mar 08, 2020 11:56 am
If it could make the "programmed IO" IDE transfer code loop run from cache and thus get speed on MMUless (no relocation of KS to fastest RAM) 68EC030?
You can load the scsi.device in fast ram and that will give you some IDE speed up even without fastrom.

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