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HDMI generation by cloning video ram(coming from [url]http://www.worldofspectrum.org/forums/showthread.php?p=768257&posted=1#post768257[/url]). A thing I was brainstorming about.. Why …
... /microcontroller respond to any video ram change in the ZX Spectrum ... /> No analog circuits, no video ram reading and contention problems.
ram, with HDMI output...
Upper case in INKEY$Hi, how I get upper case in INKEY$ ? Is there a POKE ? Thanks.
Hi,
how I get upper case in INKEY$ ? Is there a POKE ?
Thanks.Simple Question! RAM InterfaceI was messing around on my spectrum yesterday and blew it up! Im sure it has to do with the RAM joystick interface I bought but hadn't tested. Is the…
... has to do with the RAM joystick interface I bought but ...Hooky - hook ZX ROM and rewire RST and NMI to RAM - rantThis is a rather long rant. Not for short tempered. :) The objective is to hook into RST "vectors" and NMI on a Spectrum without affecting the normal…
... But since this is in RAM we can later redirect ... best "safest" address in RAM for such a table?< ... (incl. Speccy) do a RAM test
at startup. ... table before
the RAM test / it will get overwriten ... Bummer. What if we replace RAM checking
code with ...Spectrum Spares in my Shop!Hi everybody, Excuse the spam please. :) I've update my Spares section of my shop here: [url]http://www.mutant-caterpillar.co.uk/shop/index.php?cPa…
... the usual stuff like RAM chip (lower 16K, upper 32K, all 128K ...ZX81 + 16k RAM Pack + Original PSU... What's it worth?Hey guys Got my ZX81 this morning its in excellent condition.. [IMG]http://s30.postimg.org/iwetzxku9/IMG_20140818_142443.jpg[/IMG] However, my T…
... with original PSU & 16k RAM pack actually worth here? If ...For Sale?? Offers? Spectrum ZX81, PSU & 16k RAMHi all I've got a ZX81, 16k RAM pack & original PSU here I purchased sadly it won't work with my TV and I don't want to hack it apart to make compos…
... 've got a ZX81, 16k RAM pack & original PSU here ...RAM issue for potential 48k buy?Hi guys I've got a 48k in my sight for ?20 but... it has an issue: [QUOTE]"I tested the computer and only displayed a distorted screen. Coloured …
... />
Would this be faulty RAM chips? I've seen similar ...Wanted: ZX81 boxed with 16k RAM PackI'm looking for a clean, working and good condition ZX81 with original Sinclair 16K RAM Pack. Would prefer if it was in a box. Oh and if you have 3D …
I'm looking for a clean, working and good condition ZX81 with original Sinclair 16K RAM Pack. Would prefer if it was in a box. Oh and if you have 3D Monster Maze that would be the icing on the cake, thanks.Is my ZX81 RAM Pack OK?Hi guys I've just taken my 16k RAM pack apart to give it a clean inside and out and i noticed these strange burn type marks!? [IMG]http://s7.postim…
... 've just taken my 16k RAM pack apart to give it ... this burn marks!? Is my RAM pack damaged I haven't ...48K Ram Check Command not workingI am trying to repair my Spectrum 48k. It is having issues loading games, sometimes they load all the way to launch and then the speccy resets. Oth…
... points me towards checking the RAM.
I have entered ...Interfaces & ROMsHi everyone, I'm currently looking into the various modern interfaces for the Spectrum to allow me to run all my games from an SD card. I have a few…
... a Spectrum with a 16K RAM fault, I could boot ... ROM and then test the RAM from it. I'd ... TEST PROGRAMS
[*]SPECTRUM 128 RAM TESTER
[*]SPECTRUM ROM ... ]
The 128 RAM Tester and ROM Tester won ... and that's really the upper end of my budget. I ...Spectrum stuff for sale (ZX81, RAM pack, Tapes... etc)Selling the following: [IMG]http://s26.postimg.org/uk0ntdsq1/IMG_20140902_205737.jpg[/IMG] [IMG]http://s26.postimg.org/ronkmioq1/IMG_20140902_20575…
... original too)
ZX81 16k RAM pack - Working
Spectrum tapes ...Early ZX80/81 RAM Pack???Hey all I got given this RAM pack... It doesn't work (i know why now) but compared to my RAM pack this one is really strange... Is this a ZX80 RAM p…
... />
I got given this RAM pack... It doesn't work ... now) but compared to my RAM pack this one is really ... strange... Is this a ZX80 RAM pack or something as it ...The complete Manic Miner RAM disassemblyHot on the heels of the [url="http://skoolkit.ca/disassemblies/jet_set_willy/"]Jet Set Willy disassembly[/url], here is [url="http://skoolkit.ca/disa…
... /manic_miner/"]The complete Manic Miner RAM disassembly[/url] (Bug-Byte version ...Interface 1bis RAM Drive modificationAll Interface 1bis users I hope I am not interfering with Dan, but I saw on his site that he has a RAM Drive upgrade/modification for the Interface …
... site that he has a RAM Drive upgrade/modification for the ... have an on-board 128K RAM drive, the user must install ...Tinkering with DMASo, some afternoon tinkering... [img]http://photo.alioth.net/tmp/dma_small.jpg[/img] The purpose of this all is to see what's possible using the Xi…
... buses and writes directly to RAM, instead of the CPU requesting ... instructions then writing them to RAM). In this case, the test ... whole thing with changing the upper 8 bits of the port ... serial flash without requiring nonvolatile RAM (which means you have to ...Double keystrokes on zx spectrumHappy New Year everyone. I have this spectrum 48k issue 3b I?ve been working on now and then. I have replaced upper rams, installed a lower ram repla…
... . I have replaced upper rams, installed a lower ram replacement module and ...Ram Turbo Interface with Kempston and Sinclair/Amstrad joysticksHi! Do you know how to plug and use two different joysticks with the Ram Turbo interface? [url]http://www.worldofspectrum.org/infoseekid.cgi?id=1000…
... two different joysticks with the Ram Turbo interface?
[url ...80K RAM UpgradeAn 80K RAM upgrade has been listed on sellmyretro.com (not by me). It is based on the one originally designed by Sandy Electronics and has their p…
An 80K RAM upgrade has been listed on ... /details/NEW-SCT-MODULE-EXPANSION-RAM-80K-FOR--ZX-SPECTRUM-4119 ...Issue 1 16K RAM bankFolks, I recently had a chance to fix a couple of Issue 1 boards, and learned the hard way that the chips in the 16K RAM bank have a different place…
... the chips in the 16K RAM bank have a different placement ... from 2 up have the ram chips lined up the most ... meaningless reports from the Fruitcake RAM tester, I finally checked all ...Wanted: RAM Turbo InterfaceHi guys I am on the lookout for a RAM Turbo interface so anyone has any going spare then please give me a heads up. Cheers
Hi guys
I am on the lookout for a RAM Turbo interface so anyone has any going spare then please give me a heads up.
CheersSpectrum +2 (grey) RAM issueHi, I?ve got a ZX Spectrum +2 (grey) with what I think is a RAM issue. I used to be able to load games very reliably by playing converted TAPs and …
... what I think is a RAM issue.
I used ... that device is a 128K RAM test firmware.
When ... [/url], page 4) means that RAM page 5 has an issue ... the PCB is for which RAM page?
I?m ...Loads of Microdrive cartridges on Ebay plus Vortex RAMI?ll be selling three bundles of eight Microdrive cases with four, used cartridges each, means 32 cartridges per bundle, here?s one of them [img]http…
... an untested Vortex SP 512 RAM expansion with CPU and ULA ...TR4/TR5 replacementHi guys, I've got another Spectrum I'm working on now - an Issue 4S this time. When I originally got it, I powered it up and did the basic tests a…
... a fault with the upper 32K of RAM. Not surprising, and I ... the voltages on the lower RAM IC's show they are ... still wrong on the lower RAM IC's, so I'm ...Video ZX Spectrum+ 48k<span>Good day ... is a bit of time that I try to fix my zx spectrum ... I replaced the ram 4116, all electrolytic capacitors ... but the monitor loo…
... zx spectrum ... I replaced the ram 4116, all electrolytic capacitors ... but ... the two spots in the upper left, because it's my ...Another silly hardware idea - RAM Pack adaptorHow about a mini bit of PCB that adapts ZX81 RAM Packs to replace the address space of the Spectrum's ROM? I guess practically you'd need a way to…
... of PCB that adapts ZX81 RAM Packs to replace the address ... well just design your own RAM board.
Could have ...Turbo RAM Glitch or feature ?I have been testing a Spectrum [url="http://www.worldofspectrum.org/infoseekid.cgi?id=1000328"]worldofspectrum.org/infoseekid.cgi?id=1000328"]RAM Tur…
Testing a RAM packI had my Spectrum + today which is working, but i also had a ZX Spectrum 32k RAM Pack and i wanted to test it. Is there anyway i can test this on the…
I had my Spectrum + today which is working, but i also had a ZX Spectrum 32k RAM Pack and i wanted to test it. Is there anyway i can test this on the Spectrum + and if so how ?
thanksIssue 3B woesHello there, I currently have a Issue 3B for repairs around, it used to have broken upper and lower RAM, which I replaced with 41256-120 DRAMs (hac…
... used to have broken upper and lower RAM, which I replaced with ...
