Search found 446 matches

by RMartins
Wed May 27, 2020 3:05 am
Forum: Hardware
Topic: ISSUE4A help needed
Replies: 7
Views: 156

Re: ISSUE4A help needed

Is the CPU socketed ?
Can you replace it and check if it makes a difference ?
by RMartins
Wed May 20, 2020 4:20 pm
Forum: Games/Software
Topic: The first game you bought
Replies: 24
Views: 2536

Re: The first game you bought

My first games where:
1 - Space invaders (it was a clone, with a different name)
2 - AirWolf
3 - Commando
by RMartins
Wed May 20, 2020 1:52 am
Forum: Hardware
Topic: Recapped +2 - RF Colour bleed appears worse
Replies: 6
Views: 215

Re: Recapped +2 - RF Colour bleed appears worse

Are you using any modern power brick ? A switched-mode power supply . i.e one of those that are small and have an high frequency oscillator inside ? I have experienced a lot of interference, with some of the cheap ones. Usually some kind of wave going down or up the screen. But usually they don't af...
by RMartins
Wed May 20, 2020 1:38 am
Forum: Programming
Topic: Tearing while scrolling attributes
Replies: 13
Views: 299

Re: Tearing while scrolling attributes

I would say, that your code is slow enough to process those lines, that the raster line catches up with the character you are changing the color at. Two easy fixes: 1 - Move your graphics to the bottom of the screen, and you will have more time, before the raster line catches up with you. 2 - Wait a...
by RMartins
Tue May 19, 2020 11:41 am
Forum: Other Retro Stuff
Topic: The MSX
Replies: 19
Views: 563

Re: The MSX

It would have been a nice screen mode to have had on the Spectrum, but with direct access to read and write the video RAM. but character backgrounds are almost useless without hardware sprites, and hw sprites are too costly and too limited at that cost imo i would be much happier if the Spectrum ha...
by RMartins
Mon May 18, 2020 4:32 am
Forum: Other Retro Stuff
Topic: The MSX
Replies: 19
Views: 563

Re: The MSX

The Memotech MTX500, MTX512 U.K. made computers also use the same video display processor (the Texas Instruments TMS9929A) as the original MSX computers. However they are not compatible. Mark The MTX line of computers, was one that really impressed me for it's quality and design. The computer case ...
by RMartins
Thu May 14, 2020 11:16 pm
Forum: Hardware
Topic: The Startek DT-90 Project.
Replies: 11
Views: 476

Re: The Startek DT-90 Project.

... https://i.postimg.cc/mr0MypZB/31d2bacdfdb400167402eccaaedc661a.jpg Assuming the board does NOT have DIP components mounted on both sides, you still have some DIP square pins on the wrong position, that are not in pin 1 position, since they appear on one side of the chips but in some other locat...
by RMartins
Thu May 14, 2020 11:12 pm
Forum: Hardware
Topic: The Startek DT-90 Project.
Replies: 11
Views: 476

Re: The Startek DT-90 Project.

... If you look at the pcb mask, the one that have the components layout, LED4 (green/red) with the 3 legs sawing the negative leg soldered in the ground (top side), but in bottom side of the board soldered again in a ground track ( bottom side) but that time through R1 resistor (91ohm) for current...
by RMartins
Thu May 14, 2020 10:22 pm
Forum: Showcase your work!
Topic: New File Browser for ZX-UNO
Replies: 146
Views: 5199

Re: New File Browser for ZX-UNO

Wow! This is Perfect! I was waiting a long time for this, Thank You! A little suggestion, I've an omni 128, also a lot of rubber keys 48's, can u please add an option to change the cursors keys to be used without caps (ex. 5,6,7,8 keys) as this machines doesn't have a specifics keys for cursor cont...
by RMartins
Thu May 14, 2020 9:45 pm
Forum: Hardware
Topic: Recapped +2 - RF Colour bleed appears worse
Replies: 6
Views: 215

Re: Recapped +2 - RF Colour bleed appears worse

Nichicon, are some of the best caps out there, if they are not fake (most probably are not). Without a picture is difficult to evaluate what you are seeing, but in a general if the output is still RF, it's going to have noise, no matter what. You might want to mod the RF into a composite video out, ...