STF REMAKE PROJECT

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ALPHA USER BUILDS
Where Alpha builders can post pics and progress etc
Topics: 8

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Last post Re: PaulJ Progress
by PaulJ View the latest post
Sun Oct 21, 2018 11:32 pm

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SUGGESTIONS

Last post by exxos « Sun Oct 21, 2018 12:58 am
Replies: 55
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...
55 Replies

2840 Views

Last post by exxos
Sun Oct 21, 2018 12:58 am
ALPHA PARTS LIST

Last post by PaulJ « Wed Oct 17, 2018 1:59 pm
Replies: 16
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...
16 Replies

722 Views

Last post by PaulJ
Wed Oct 17, 2018 1:59 pm
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

736 Views

Last post by exxos
Fri Sep 28, 2018 9:36 pm
DMA port "update" ideas..

Last post by exxos « Sun Oct 21, 2018 11:56 pm
Replies: 35
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...
35 Replies

365 Views

Last post by exxos
Sun Oct 21, 2018 11:56 pm
Parallel port

Last post by PaulJ « Sat Oct 20, 2018 3:12 pm
Replies: 8
by kodak80 » Sat Oct 20, 2018 3:50 am

Hi everyone

I tried using PARCP on my 2nd board and it fails to work which may mean either I have some dodgy soldering or the port pins are not...

8 Replies

83 Views

Last post by PaulJ
Sat Oct 20, 2018 3:12 pm
Video driver thoughts

Last post by exxos « Sat Oct 20, 2018 10:40 am
Replies: 21
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...
21 Replies

250 Views

Last post by exxos
Sat Oct 20, 2018 10:40 am
Part kits

Last post by exxos « Fri Oct 19, 2018 3:07 pm
Replies: 28
by exxos » Thu Aug 16, 2018 7:13 pm
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Would anyone be interested if I put together a basic parts kit for this ? I'm going to have to order all the parts myself anyway.. I probably have a...
28 Replies

1205 Views

Last post by exxos
Fri Oct 19, 2018 3:07 pm
Another floppy mod thought

Last post by exxos « Thu Oct 18, 2018 4:06 pm
Replies: 4
by exxos » Thu Oct 18, 2018 11:30 am

Had this thought before.. But we could actually tweak the motor on signal for internal and external drives as currently motor on goes to both...

4 Replies

63 Views

Last post by exxos
Thu Oct 18, 2018 4:06 pm
MONO output buffer thoughts

Last post by exxos « Thu Oct 18, 2018 3:45 pm
Replies: 2
by exxos » Thu Oct 18, 2018 3:31 pm

This was added in on the current schematic.. But really as I am planning to adding buffers to place some other chips, I would assume the shifter MONO...

2 Replies

33 Views

Last post by exxos
Thu Oct 18, 2018 3:45 pm
74LS05 vs 74LS06

Last post by exxos « Thu Oct 18, 2018 11:58 am
Replies: 3
by exxos » Thu Sep 27, 2018 8:13 pm

Just noticed the reset circuit has a LS05 which seems to be exactly the same as a LS06... only the LS06 has higher pull down current.

If anyone is...

3 Replies

120 Views

Last post by exxos
Thu Oct 18, 2018 11:58 am
Cartridge port adding RW...

Last post by stephen_usher « Tue Oct 16, 2018 8:15 am
Replies: 2
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....

2 Replies

100 Views

Last post by stephen_usher
Tue Oct 16, 2018 8:15 am
ALPHA MODIFICATIONS

Last post by exxos « Mon Oct 15, 2018 10:18 pm
Replies: 83
by exxos » Sun Sep 09, 2018 9:27 pm
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Started a new thread for must do fixes and mods etc.
83 Replies

2202 Views

Last post by exxos
Mon Oct 15, 2018 10:18 pm
Ordering the Alpha board

Last post by exxos « Mon Oct 15, 2018 4:03 pm
Replies: 139
by exxos » Tue Jul 31, 2018 11:41 am
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top.png

PROJECT SPONSORS ARE

* Michael Keenleyside (Gargoyle)
* Richard Coles (Icky)
* troed (Troed Sangberg)
* Phil Copeland (Forgottenmyname)...
139 Replies

4380 Views

Last post by exxos
Mon Oct 15, 2018 4:03 pm
PSU bracket remake ?

Last post by sandord « Sun Oct 14, 2018 11:43 am
Replies: 63
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...
63 Replies

1490 Views

Last post by sandord
Sun Oct 14, 2018 11:43 am
Floppy connector un-f*ck pcb

Last post by exxos « Mon Oct 08, 2018 1:30 pm
Replies: 1
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...

1 Replies

76 Views

Last post by exxos
Mon Oct 08, 2018 1:30 pm
RESET circuit tweaks

Last post by exxos « Sun Oct 07, 2018 9:45 pm
Replies: 7
by exxos » Thu Sep 27, 2018 8:41 pm

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...

7 Replies

136 Views

Last post by exxos
Sun Oct 07, 2018 9:45 pm
Video connector un-f*ck

Last post by Forgottenmyname « Sat Oct 06, 2018 8:54 pm
Replies: 22
by exxos » Fri Sep 21, 2018 9:23 am
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Created a new thread while I am working on a adapter board..

I edited my lib, and messed it up,The pin numbers in on the schematic does not tally...
22 Replies

464 Views

Last post by Forgottenmyname
Sat Oct 06, 2018 8:54 pm
Second CPU for audio processing?

Last post by exxos « Thu Oct 04, 2018 6:41 pm
Replies: 31
by exxos » Mon Oct 01, 2018 8:12 pm
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In relation of thinking about a new audio system and the fact we don't have any new software to play's like tracker tunes on a DSP etc.. We do...
31 Replies

421 Views

Last post by exxos
Thu Oct 04, 2018 6:41 pm
STE DAC circuit

Last post by exxos « Mon Oct 01, 2018 10:33 pm
Replies: 5
by exxos » Mon Oct 01, 2018 2:41 pm

dac.JPG

I was just having a quick look at the STE DAC circuit..

Is the LMC chip really used for anything ? I was thinking the DAC has a lot of...

5 Replies

159 Views

Last post by exxos
Mon Oct 01, 2018 10:33 pm
ALPHA REV G SCHEMATIC

Last post by exxos « Mon Oct 01, 2018 7:08 pm
Replies: 2
by exxos » Thu Sep 27, 2018 5:11 pm

This is the original Alpha schematic with all the current known fixes/changes..

800G.png

DOWNLOAD ZIPPED
800G.zip

FIX HISTORY (SCHEMATIC)...

2 Replies

197 Views

Last post by exxos
Mon Oct 01, 2018 7:08 pm
New video connector ?

Last post by exxos « Fri Sep 28, 2018 12:50 pm
Replies: 26
by exxos » Fri Sep 21, 2018 1:01 pm
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As a thought about how annoying the video connector is solder, and the limited number of pins etc..

I was half wondering if you the motherboard...
26 Replies

488 Views

Last post by exxos
Fri Sep 28, 2018 12:50 pm
PCB Build - Progress - Post your Pics here :-)

Last post by Forgottenmyname « Mon Sep 24, 2018 9:15 am
Replies: 135
by Forgottenmyname » Sat Sep 01, 2018 9:21 pm
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Hi All,

So today I've started building the STF Remake PCB. I've started by soldering in the sockets that I already had at home. I don't know why but...
135 Replies

3899 Views

Last post by Forgottenmyname
Mon Sep 24, 2018 9:15 am
Thoughts

Last post by exxos « Sun Sep 23, 2018 9:56 pm
Replies: 3
by OzOnE » Sun Sep 23, 2018 3:56 pm

Hi, all,

This is my first post here.

I've been following the project with interest after Mr TerribleFire mentioned it on his live streams.

I have...

3 Replies

114 Views

Last post by exxos
Sun Sep 23, 2018 9:56 pm
RAM Boards

Last post by exxos « Sun Sep 23, 2018 12:15 pm
Replies: 13
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...
13 Replies

513 Views

Last post by exxos
Sun Sep 23, 2018 12:15 pm
EmuTOS debug version

Last post by Icky « Sat Sep 22, 2018 2:06 pm
Replies: 3
by BlankVector » Sat Sep 22, 2018 11:01 am

I'm very excited by your STF remake project, it is definitely going to become a great piece of hardware. I'm not a hardware guy myself, so I will not...

3 Replies

158 Views

Last post by Icky
Sat Sep 22, 2018 2:06 pm

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