29 June 2019, 20:51 | #21 |
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IDE is something i havent figured out quite yet - at least not a way that makes it easily accessible to hobbyists...I mean, i could integrate IDE in a way, but it wouldn't be autobooting...I'd presume it just needs an inline rom, but thats not my forte...
Still, any advice or ideas welcome |
30 June 2019, 07:32 | #22 |
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The popular option for ide implementations these days is the Gayle emulation style IDE. The drivers for this are in ROM since 2.05 (37.300).
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30 June 2019, 16:17 | #23 |
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Another option which is used on the TK 68030 IDE+SRAM card is to implement a oktagon style IDE interface and use that driver.
https://github.com/MHeinrichs/68030t..._IDE-interface Providing the driver in autoconfig ROM would also make it bootable on 1.3. Other weak points in the C= scsi.device driver is the MaxTransfer bug and problem with 4GB+ drives which both has caused users and community in general massive headaches through the years. Does anyone know how the oktagon driver fares in these aspects? |
30 June 2019, 20:54 | #24 | |
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Quote:
http://aminet.net/package/disk/misc/oktapus |
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01 July 2019, 20:31 | #25 | |
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Quote:
I improved the IDE interface timing (it's faster now) and fixed some small bugs in the driver (the original driver would hang if it tried to access a non exisiting slave drive). Unfortunately it is not autobooting but it runs quite well and it is very easy to build. See below schematic and PCB render: A500ide_PCB.pdf For a real life pictures see here: http://eab.abime.net/attachment.php?...3&d=1509650841 |
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03 July 2019, 13:09 | #26 |
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Nice! I guess it's just plug n' play, no autoconfig to worry about? I've got an A590 on the side expansion that doesn't like sharing.
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03 July 2019, 14:53 | #27 | |
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Quote:
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04 July 2019, 10:46 | #28 | |
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The driver is hardcoded to that address. So yeah, shouldn't interfere with autoconfig devices. |
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04 July 2019, 10:51 | #29 |
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I get about 600kb/sec using an MC68000 (or MC68010) and a 44pin IDE->microSD converter.
On an 68010 it can go even faster if the driver would be optimized. |
08 July 2019, 10:10 | #30 |
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31 July 2019, 23:24 | #31 |
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A500-14Mhz-Accelerator
Hi, is this board a 2-layer or 4-layer.. What I mean has he done a 4-layer board..
Last edited by hooleydog; 01 August 2019 at 00:22. |
01 August 2019, 21:03 | #32 |
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It's a 2-layer board
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02 August 2019, 03:16 | #33 |
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Ok.. Now off topic.. Where do you plug in this other board.. The Dram board... No instructions or pictures.... You see I'm gonna order some. Nice design...
Last edited by hooleydog; 03 August 2019 at 02:48. |
10 August 2019, 16:07 | #34 | |
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Hi I can't open your Gerbers.. neither can PCBway... ERROR: A500_14Mhz_Accelerator-B_Cu.gbr Multiple gbr Board Outline (.GBR) files found in design! Last edited by hooleydog; 12 August 2019 at 15:28. |
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11 August 2019, 05:03 | #35 |
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11 August 2019, 21:25 | #36 |
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Looks good Mathesar. No Autoboot, right? I think your board is the same as Matze's SimpleIDE ?
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22 August 2019, 13:15 | #37 |
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It's a 2 layer design. The DRAM board plugs into the space where the 44256 DIP's go. can see here on my near complete A500++ repro board:
Without sockets fitted, it should just allow the keyboard to sit right, but in sockets, it's too much Z-height and will foul. |
28 August 2019, 22:13 | #38 |
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Ok I see now. Just wondering I would like to build myself a 500+ repro board.. Do you have the gerbers for it.. Because there is one on PCBWay.. But it's not complete..
Oh I see that your in Brighton. I was born there, and lived in lower Bevendeen.. Thanks.. Last edited by hooleydog; 28 August 2019 at 22:27. |
01 September 2019, 22:45 | #39 | |
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Hi.. Any Gerbers, so I can some PCB's made.. Thanks.. |
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02 September 2019, 11:15 | #40 | |
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I don't know Matze's design so I have no idea if his is similar. I have improved this design: http://www.mkl211015.altervista.org/ide/a500ide.html The original design's timing is slightly messy. By adding the flip flops and some logic the timing should now be correct although faster than old PIO0, more like PIO3..4. Modern devices handle that without problems though. |
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