Search found 1253 matches

by exxos
Sun Feb 18, 2018 10:56 pm
Forum: TWEAKS & FIXES
Topic: Hissing and whistling in the STe audio output
Replies: 11
Views: 61

Re: Hissing and whistling in the STe audio output

yikes that is bad indeed. Wrap the floppy power cable through a core like this... fc.jpg .. likely you will have to flick out the cables from the connector and wrap around the core about 3 times and put back in the connector. Put a low ESR 1,000uf as close to the motherboard end of the 5V floppy pow...
by exxos
Sun Feb 18, 2018 10:21 pm
Forum: TWEAKS & FIXES
Topic: Hissing and whistling in the STe audio output
Replies: 11
Views: 61

Re: Hissing and whistling in the STe audio output

On my STe, Floppy activity can definitely be heard in the speakers. However, I don't know if it comes from motor, DMA, or something else. My ears would say disk-DMA, but I can't tell for sure. DMA access will create various noise issues, same as RAM access, that I have heard before at some point. T...
by exxos
Sun Feb 18, 2018 9:34 pm
Forum: TWEAKS & FIXES
Topic: Hissing and whistling in the STe audio output
Replies: 11
Views: 61

Re: Hissing and whistling in the STe audio output

The sound seems like digital noise. Try running RAM test and the "tone" will likely change. All the noise is generated and coupled all over the motherboard. When the floppy drive pulls more power from the 5V rail, it affects the way the noise is generated and routed across the board. Floppy drive ha...
by exxos
Sun Feb 18, 2018 5:18 pm
Forum: TWEAKS & FIXES
Topic: Hissing and whistling in the STe audio output
Replies: 11
Views: 61

Re: Hissing and whistling in the STe audio output

I would first try with headphones to rule out other issues firstly. Amplifiers can "hiss" "by design" and its nothing to do with the STE in that respect. Also bad cables between the STE and amplifier can cause all sorts of noise. Its why I suggest headphones to hear exactly what the STE is outputtin...
by exxos
Sun Feb 18, 2018 2:09 am
Forum: CHAT FORUM
Topic: My weekend sorted...
Replies: 3
Views: 105

Re: My weekend sorted...

If it wasn't for that first Atari , I wouldn't have got into Atari machines at all. Oddly the 2600 seems to be much more popular than I thought. I'm going to look into the composite mods for it and see if I can come up with a kit. I know there are countless variations already, but I like to create m...
by exxos
Fri Feb 16, 2018 6:13 pm
Forum: NEWS & ANNOUNCEMENTS
Topic: ST/F/M 6 CHIP ROM UK IN STOCK
Replies: 0
Views: 30

ST/F/M 6 CHIP ROM UK IN STOCK

6_chip_tos.jpg Finally started doing these sets. Only had chance today to do five sets of UK TOS1.04 ROM's. Will try and do some other languages next week. These are brand-new chips used and are 100ns, so should be compatible with my V1.5 booster as well. STORE LINK https://www.exxoshost.co.uk/atar...
by exxos
Fri Feb 16, 2018 4:37 pm
Forum: CHAT FORUM
Topic: My weekend sorted...
Replies: 3
Views: 105

My weekend sorted...

2600.jpg My first ever Atari machine, had when I was around 14 years old I think. Going to see if I can get it going on my girlfriends TV over the weekend! Sadly not many games, centipede, pole position, phoenix, space invaders. Will likely have to look on evilbay for some games, any suggestions ?
by exxos
Fri Feb 16, 2018 3:36 pm
Forum: INTRODUCE YOURSELF
Topic: Greetings from France
Replies: 5
Views: 90

Re: Greetings from France

Bobrane wrote:
Fri Feb 16, 2018 3:31 pm
Wow. I must say : lightning-fast shipping ! :excited:
Thank you !
Thanks for your order!

Yes, my girlfriend packs and ships stuff, I just don't have time to do it myself. It would take me 5 days to find which "pile" the sticky tape is in for starters if I shipped the stuff!
by exxos
Fri Feb 16, 2018 11:54 am
Forum: INTRODUCE YOURSELF
Topic: Greetings from France
Replies: 5
Views: 90

Re: Greetings from France

Looks like you chose all the best stuff there :thumbup:
by exxos
Thu Feb 15, 2018 9:55 pm
Forum: NEWS & ANNOUNCEMENTS
Topic: Falcon 14MB simm RAM boards back in stock
Replies: 0
Views: 41

Falcon 14MB simm RAM boards back in stock

(should be in store tomorrow hopefully) falcon-ram.jpg 72 PIN SIMM adapter card for the falcon 030. Requires a 16MB simm which gives the maximum 14MB ST-RAM. PCB layout has been carefully designed to use the bulk of the copper area for 5V and 0V rails. PCB is assembled and ready to use (16MB simm no...