ALPHA DEVELOPMENT INFO

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ALPHA PARTS LIST

Last post by exxos « Wed Nov 07, 2018 11:32 pm
Replies: 26
by exxos » Fri Aug 03, 2018 10:15 pm
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No part numbers yet.. that will take a while to sort through, but mostly generic parts so should be easy to find anyway... but all the parts I think...
26 Replies

7086 Views

Last post by exxos
Wed Nov 07, 2018 11:32 pm
SUGGESTIONS

Last post by exxos « Sun Oct 21, 2018 12:58 am
Replies: 53
by exxos » Tue Aug 22, 2017 6:24 pm
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Post here suggestions to include in the new STF.

Here are some common ones..

HDMI output
Well , there is no way to do this without a scan...
53 Replies

14813 Views

Last post by exxos
Sun Oct 21, 2018 12:58 am
Current roadmap 2018

Last post by exxos « Fri Sep 28, 2018 9:36 pm
Replies: 7
by exxos » Sun Jul 29, 2018 11:53 am

First of all, this project isn't dead.. far from it..

Current status of the motherboard is I need to add caps and manually route the RGB drivers.....

7 Replies

3860 Views

Last post by exxos
Fri Sep 28, 2018 9:36 pm
STFM Keyboard Remake

Last post by PaulJ « Tue Oct 15, 2019 5:50 pm
Replies: 35
by Icky » Wed Jul 17, 2019 7:15 am
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I have started another project, not that I have enough of them

Whilst working on the STFM Case Remake project Exxos and I had the thought when we...
35 Replies

4804 Views

Last post by PaulJ
Tue Oct 15, 2019 5:50 pm
Cycle exact FPGA recreation

Last post by Icky « Tue Oct 08, 2019 8:17 pm
Replies: 13
by troed » Mon Oct 22, 2018 1:13 pm
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Ijor's analysis work has paid off. It runs Closure :D :D
13 Replies

1895 Views

Last post by Icky
Tue Oct 08, 2019 8:17 pm
re-Amiga 1200

Last post by terriblefire « Thu Aug 22, 2019 4:10 pm
Replies: 23
by troed » Sat Aug 18, 2018 9:51 pm
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A friend of mine just did this - which I think is great motivation and support for exxos' reST project as well :)
23 Replies

3710 Views

Last post by terriblefire
Thu Aug 22, 2019 4:10 pm
STE DAC FPGA issues

Last post by exxos « Sun May 19, 2019 1:25 pm
Replies: 16
by exxos » Mon May 13, 2019 9:59 am
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I have been contemplating when the FPGA MMU core etc gets tested with that with it being a STE core, a updated audio DAC circuit will be pretty...
16 Replies

2143 Views

Last post by exxos
Sun May 19, 2019 1:25 pm
MMU SMT ADAPTERS - WIP

Last post by exxos « Sun Apr 28, 2019 1:05 am
Replies: 73
by exxos » Tue Oct 23, 2018 6:13 pm
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Somewhere I mentioned about the lack of PLCC MMU & GLUE, and that I have small stock of SMT versions which I may build onto the possible future...
73 Replies

8344 Views

Last post by exxos
Sun Apr 28, 2019 1:05 am
PSU bracket remake ?

Last post by exxos « Wed Apr 24, 2019 9:01 am
Replies: 93
by exxos » Fri Aug 10, 2018 7:41 pm
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Was actually thinking about the metal power supply plate, mostly in terms of the remake project, also maybe use with normal Atari's as well..

If...
93 Replies

10906 Views

Last post by exxos
Wed Apr 24, 2019 9:01 am
Floppy connector un-f*ck pcb

Last post by exxos « Mon Apr 15, 2019 2:17 pm
Replies: 9
by exxos » Mon Oct 08, 2018 1:14 pm

Thanks to Icky for unravelling this connector chaos..I have started in a new un-f*ck PCB... Highlighted below are just the GND connections to...

9 Replies

1559 Views

Last post by exxos
Mon Apr 15, 2019 2:17 pm
GLUE SMT ADAPTERS - WIP

Last post by exxos « Fri Apr 12, 2019 10:59 pm
Replies: 17
by exxos » Sun Mar 31, 2019 11:38 pm
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I've made a start in the GLUE 80 pin SMT adapters tonight. So far the schematic part and such should be done now. I need to route the actual PCB...
17 Replies

1589 Views

Last post by exxos
Fri Apr 12, 2019 10:59 pm
Internal UltraSatan

Last post by Darklord « Mon Mar 25, 2019 6:20 pm
Replies: 13
by exxos » Fri Oct 26, 2018 2:57 pm
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My Xmas pressies arrived :D

IMG_3350.JPG

So my initial thought was having this mounted like this.. So the cards are above the sockets at the...
13 Replies

1923 Views

Last post by Darklord
Mon Mar 25, 2019 6:20 pm
DMA port "update" ideas..

Last post by exxos « Sat Mar 09, 2019 3:14 pm
Replies: 128
by exxos » Sun Oct 14, 2018 10:59 pm
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I started a seperate thread for this...

For those not aware...

We finally solved the idea behind the STE DMA buffers. Basically the 1772 does not...
128 Replies

15165 Views

Last post by exxos
Sat Mar 09, 2019 3:14 pm
Video driver thoughts

Last post by Icky « Sat Feb 23, 2019 8:38 am
Replies: 272
by exxos » Thu Sep 27, 2018 9:33 pm
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I thought about this before basically I think the conclusion was that it was hard to get any simple video DACs now..I do have a huge stack of the...
272 Replies

20781 Views

Last post by Icky
Sat Feb 23, 2019 8:38 am
un-f*ck boards new order

Last post by PhilC « Sat Jan 12, 2019 12:33 pm
Replies: 3
by exxos » Fri Jan 11, 2019 10:39 pm

I'm getting 10 of the V3 video-dac boards made, plus some more RGB connector un-f*ck boards for Icky..

Is there any other essentials of any of these...

3 Replies

874 Views

Last post by PhilC
Sat Jan 12, 2019 12:33 pm
32Mhz oscillator "issue"

Last post by ijor « Fri Dec 07, 2018 3:58 pm
Replies: 19
by exxos » Fri Aug 31, 2018 4:45 pm
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The first small issue is that I am actually using a standard 32MHz oscillator.. The machine itself will of course work fine.. But only actually just...
19 Replies

3105 Views

Last post by ijor
Fri Dec 07, 2018 3:58 pm
Cartridge port adding RW...

Last post by exxos « Mon Nov 26, 2018 11:39 am
Replies: 8
by exxos » Mon Oct 15, 2018 10:54 am

There was a brief talk over on AA last year about replacing the cartridge port with a super I/O port. There was of course mixed views about this....

8 Replies

1569 Views

Last post by exxos
Mon Nov 26, 2018 11:39 am
RESET circuit tweaks

Last post by exxos « Sat Nov 17, 2018 2:22 pm
Replies: 116
by exxos » Thu Sep 27, 2018 8:41 pm
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Some little tweaks to try..

Replace C901 with a 1uF ceramic... This is basically what the Falcon circuit does. It affects the delay time after the...
116 Replies

10626 Views

Last post by exxos
Sat Nov 17, 2018 2:22 pm
TOS startup sequence.

Last post by JezC « Fri Nov 09, 2018 2:19 pm
Replies: 17
by exxos » Mon Sep 17, 2018 10:26 pm
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Trying to find more info on this.. only found this so far...

System_Startup.jpg
17 Replies

3060 Views

Last post by JezC
Fri Nov 09, 2018 2:19 pm
RAM Boards

Last post by rubber_jonnie « Thu Nov 08, 2018 12:09 pm
Replies: 14
by rubber_jonnie » Tue Sep 04, 2018 8:31 am
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FYI I have received two RAM boards kindly donated by Stuart Duncan from Australia.

One is populated, one is not.

I already have one myself, so...
14 Replies

2551 Views

Last post by rubber_jonnie
Thu Nov 08, 2018 12:09 pm
Making things smaller

Last post by Icky « Thu Nov 01, 2018 12:06 pm
Replies: 9
by exxos » Wed Oct 31, 2018 9:43 pm

Of course I talk about doing away with the TTL chips in favour for tiny logic, generally using more SMT stuff... Also I found there is a PLCC 68901...

9 Replies

1383 Views

Last post by Icky
Thu Nov 01, 2018 12:06 pm
Bigger isn't always better

Last post by rubber_jonnie « Thu Nov 01, 2018 10:00 am
Replies: 16
by rubber_jonnie » Wed Oct 31, 2018 9:58 am
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For a bit of fun, I snapped the STF remake board on top of the donor C070789 board just to compare.

Huge respect to exxos for the amazing reduction...
16 Replies

2406 Views

Last post by rubber_jonnie
Thu Nov 01, 2018 10:00 am
Mongrel edition motherboard thoughts

Last post by exxos « Tue Oct 23, 2018 9:26 pm
Replies: 21
by exxos » Tue Oct 23, 2018 2:16 pm
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I have a lot of SMT GLUE & MMU currently.. I want to try and make a adapter PCB so they can be used in place of PLCC chips ultimately.. Because...
21 Replies

3112 Views

Last post by exxos
Tue Oct 23, 2018 9:26 pm
Testing the blitter

Last post by Icky « Mon Oct 22, 2018 6:38 pm
Replies: 16
by exxos » Mon Oct 22, 2018 10:56 am
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Long story short, it didn't work. :(

I tested the blitter in my STFM, and it works. In the STF I just get a totally black screen. I took the blitter...
16 Replies

2277 Views

Last post by Icky
Mon Oct 22, 2018 6:38 pm
ALPHA MODIFICATIONS

Last post by exxos « Mon Oct 22, 2018 3:55 pm
Replies: 85
by exxos » Sun Sep 09, 2018 9:27 pm
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Started a new thread for must do fixes and mods etc.
85 Replies

11333 Views

Last post by exxos
Mon Oct 22, 2018 3:55 pm

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