Search found 265 matches

by McKlaud
Fri Jan 17, 2020 11:37 pm
Forum: Hardware
Topic: ROM cartridge
Replies: 4
Views: 1205

Re: ROM cartridge

Just assembled a clone of TS1510 and 32K cartridge.
by McKlaud
Tue Jan 14, 2020 9:48 pm
Forum: Hardware
Topic: looking for Jarek Adamski
Replies: 34
Views: 19468

Re: looking for Jarek Adamski

It was not me, the files were shared by @nama and mentioned in the other post there: https://www.sinclairzxworld.com/viewtop ... 3821#p3821 :) Thanks a lot.
by McKlaud
Tue Jan 14, 2020 2:38 pm
Forum: Hardware
Topic: Improvised 32K RAM?
Replies: 6
Views: 166

Re: Improvised 32K RAM?

Well, well! Another "dead cockroach" mod :mrgreen:

Some time ago I did something similar but with SMD components. See below:
Image

Image
by McKlaud
Sun Jan 12, 2020 9:29 am
Forum: Hardware
Topic: looking for Jarek Adamski
Replies: 34
Views: 19468

Re: looking for Jarek Adamski

Good Lord! This really works! Good work and congratulation. I've been looking at Jarek's projekt for months and did not decided to built one. Well done! :mrgreen:
by McKlaud
Fri Jan 10, 2020 8:17 am
Forum: Hardware
Topic: Jupiter Ace - Case Dimensions
Replies: 19
Views: 3282

Re: Jupiter Ace - Case Dimensions

https://www.sinclairzxworld.com/viewtop ... =70#p33801

and the project is going slowly, but correct PCB was built last year. Updated PCB design is in a very advanced stage and testing will start by the on of this month (I hope).
by McKlaud
Thu Dec 19, 2019 8:07 am
Forum: Hardware
Topic: I have a broken zx spectrum+
Replies: 7
Views: 425

Re: I have a broken zx spectrum+

Hi, Let starts for the begining. The machine has the correct power brick voltage, 15 V. This is not correct. No load voltage of the ZX Spectrum PSU should be not higher than 14.5V, and full load voltage should not be lower than 7.5V. The proper spec for Plus PSU is the unregulated power supply rated...
by McKlaud
Fri Nov 29, 2019 12:00 am
Forum: ZX Spectrum Lounge
Topic: Connecting a AY-3-8910 for a ZX Spectrum 128k clone
Replies: 10
Views: 1123

Re: Connecting a AY-3-8910 for a ZX Spectrum 128k clone

@alcid34: I've looked very briefly on your schematic and A9 of AY-8-8910 is not connected anywhere. A9 must be kept low, otherwise the AY chip will ignore any address request. Any input designated as TEST should be left open (i.e. floating).
by McKlaud
Thu Nov 28, 2019 6:42 pm
Forum: ZX Spectrum Lounge
Topic: Connecting a AY-3-8910 for a ZX Spectrum 128k clone
Replies: 10
Views: 1123

Re: Connecting a AY-3-8910 for a ZX Spectrum 128k clone

Have you connected A9 of AY-3-8910 to GND?
by McKlaud
Thu Nov 28, 2019 12:39 pm
Forum: ZX Spectrum Lounge
Topic: Connecting a AY-3-8910 for a ZX Spectrum 128k clone
Replies: 10
Views: 1123

Re: Connecting a AY-3-8910 for a ZX Spectrum 128k clone

Any AY-3-891x can work with ZX Spectrum (sound wise). In my applications I use 8910s, their clones and 8912s without any issues, as log as chips are fine. There is something wrong in your connections. Any schematic would be helpful.
by McKlaud
Wed Nov 27, 2019 8:35 pm
Forum: SALES
Topic: Bits and bobs (Jupiter ACE)
Replies: 6
Views: 1035

Re: Bits and bobs (Jupiter ACE)

The list updated: 96K RAMpack + AY bare PCB - 1 unit left for 5.00GBP 96K RAMpack + AY DIY kit including nearly all parts except 628126 IC and the edge connector - 1 set for 12.50GBP Video output buffer PCB - 2 units for 3.00GBP each Jupier ACE's PCB with add-ons like 96KRAMpack, video buffer and Tw...