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ZX80 and 81 hardware questionsI'm finding a lot of the documentation that is ostensibly about the hardware of the ZX80 and 81 to be primarily about the software. I was hoping some…
... and instead get whatever the RAM posts due to the refresh ... . It also seems to think RAM will read and post during ... -
Gauging interest: ZX EvolutionHi everyone. First of all I would like to introduce myself, since this is my first post. My name is Conrad, I'm from Vancouver, BC, Canada, and I hav…
... my thread was a resounding failure, and no one has really ... -
Paging memoryI've been thinking about a possibility of paging blocks of memory to and from disk. Imagine dividing usable 32KB of Speccys RAM (why do they call it …
... dividing usable 32KB of Speccys RAM (why do they call it ... -
probably a stupid question about RST16I'm using the 'hello world' code borrowed from [url=http://equant-retrochallenge.blogspot.com/2008/07/zx-spectrum-assembly-programming-under.html]her…
... debugger it seems that the RAM has been almost completely nuked ... -
Epson printer problem solvageAnyone here got an epson printer? If yes, Anyone here seem to have intermittent problems with a certain ink colour or two not printing? I've had thre…
... , Anyone here seem to have intermittent problems with a certain ink ... -
CSS has been Rogeredcomp.sys.sinclair has just been rogered. I make do with a summary when anything happens and activity shot up on Friday. Turns out to be the usual qu…
... be the usual questions about RAM, Sam, BBC BASIC, top 32768 ... -
Repairing a faulty 48K issue 2.I am investigating one of a pair of non-working issue 2 48K Spectrums that have been sitting in a cupboard untouched for quite a few years. I haven…
... .
The lower RAM chips are marked ITT 4116 ... looking RAS signals at all RAM chips (upper and lower ... all
the upper RAM chips, which I imagine is ... and input pins of all RAM chips
(upper ... - WE is ~5V at all RAM chips (upper and lower).
Weird issue with 128 Heatsink and IF2 cartI came across a weird issue with one of my 128K heatsink spectrums.... First of all i burned Paul Farrow's 128K RAM tester v 2.06 on a 27C128 eprom …
... burned Paul Farrow's 128K RAM tester v 2.06 on ...A great end to the ZX81 30th Anniversary Year2011 has been a really good year for the ZX81 and its 30th anniversary. We have seen new games: - A collection of 1K games with hi-res graphics - Bo…
... ZXpand SD-Card and 32K RAM interface
- The ZXpand-AY ...Print Screen not Working on Windows 7I know I know this is chit chat and not a tech support forum. I ask here because the info on the web about this issue is generally shyte. I'm asking …
... processor and about 1gb of ram.
Recentnly the feature ...SnapToTap R2.3I've added z80 file support and raw binary exporting options to snaptotap. it's still 48k only though. [url]http://arda.kisafilm.org/fish/SnaptoTap…
... , as basic cannot page 128k ram. If you got any ideas ...PC Demo's?A while ago I had a few bookmarks for PC Demo sites, however failure on my own part to backup correctly lead me to losing them due to a HD failure (y…
... for PC Demo sites, however failure on my own part to ... them due to a HD failure (yeah I know... my own ...joystick interface working with divide?hi i have the ram 2 joystick inteface but cant get it to work with divide. is it possible?! regards
hi
i have the ram 2 joystick inteface but cant get it to work with divide. is it possible?!
regardsMaxthonFollowing an emergency OS reinstallation due to the failure of the main hard disk of my desktop PC (luckily I was able to restore the data not yet tr…
... OS reinstallation due to the failure of the main hard disk ...Hires Opus Discovery picturesAs I had the rare and awesome opportunity to be able to buy 5 or 6 Opus Discovery interfaces this year, and because I couldn't find hires pics of the…
... didn't have a 6116 ram chip, don't know if ...Issue 2 voltage troubleDear all, I got my hands on an old issue 2 from a friend. Price was close to zero so I did not hesitate to take it. After powering it up I was sur…
... conditions. Temperature of the lower RAM seems to be not unusual ... or that some of the RAM or capacitors has a short ...New ZX-ULA2An upgraded / replacement ULA for the Sinclair ZX81 is now available. The ZX-ULA2 is a direct replacement for the standard ULA used in the Sinclair …
... run in the 32K-48K RAM region of memory.
? Turbo ...Some questions for us big-brains to ponder...1) In this week's Micro Mart (well, tomorrow it will be last weeks, but I only got around to reading it today) it says that it's untrue that PC compo…
... that PC components such as RAM sticks and CPUs can be ...Why are the same size memory cards different sizes?I've heard before that two memory cards or USB sticks can have the same official capacity, but be different capacities in reality, and I'm not talkin…
... equals 1,024 bytes in RAM, but only 1,000 bytes ...spectraNET 2012Hello, time ago I got a divIDE interface and found it awesome, not many IC and so amazing capabilities. Nowdays Internet is everywhere so I looked ar…
... design and bigger rom & ram but it's rare and ... a CF interface working in ram mode for mass storage.
JSpeccy v0.89 Christmas 2011 EditionHi, After seven months of hard work, tonight I've released a new JSpeccy version as my humble Christmas gift for all the community. As my webpage i…
... store the cartridges.
[*]LEC RAM Extension Emulation, that allow to ... and, unofficially, store the LEC RAM pages.
[*]The fast load ...Repaired some 128K's todayI have lot's of ZX Spectrums laying aside with some more complex defects. Today I decided to try to fix some of them. I thought: why not share my ex…
... 5V cupper lines to the ram chips.
Problem ... out.. it was not a ram chip: the 'shortcircuit' ... course I already removed a ram chip :( stupid...
... on screen there was some ram checking done when booting, ... with A0 on the ram chips from the documentation ...ZX-7 instruction (BEEPER 8-channels editor)ZX7 was the most powerful ZX Spectrum 48K music editor end engine since 1988 to 2011 (when OCTODE appeared). [url]http://www.worldofspectrum.org/inf…
... managed to fit in 48K RAM 8 (eight!) of my ZX7 ...Greatest Album's by YearHello list fans! For absolutely no reason at all, (well maybe boredom played a part), here's a list of what I think are the greatest album's by year …
... Rush - Neil Young
1971 Ram - Paul McCartney
1972 Harvest ...BeginnerIm having a go at fixing a spectrum which has been in the loft for 20 years and would like some advice please.... I have downloaded the 'spectrum se…
... be correct in assuming the RAM may also have gone??A Thread with not much Speccyness about it..Sorry this not only non-speccy related but is also somewhat C64 related:o But hey this is the chit forum is it not? Anyway, I already posted this q…
... height of the DDR PC2700 RAM (it's an old MB ... . I know I have seen RAM that is not as vertically ... get some slim DDR PC2700 RAM (a 512MB or 1GB chip ... ever any lower profile DDR RAM? Do you have any shorter ...Faulty rubber speccy - advice neededHello all speccy hardware gurus :) Recently I moved to a new flat and after a long time have some space (and time) to dig out my old Speccy hardware…
... somewhere between upper and lower ram chips... maybe even ULA...
ram chips have faultered. This motherboard ... had upper ram chips socketed so I pulled ... the same as with upper ram fitted - black paper with ...Would anyone be interested in......Hi, I'm wondering if there would be much interest in an expansion card for the speccy that gives a VGA output with enhanced gfx & sound capabilities…
... ; sound capabilities along with some RAM and SD memory card interface ...+3e with DivIDE systemsIf we replace old R-GAL chip on original DivIDE with new XR-GAL (this is only firmware for GAL chip) then will possible DISABLE or ENABLE any DivIDE …
... can be install to divide ram, need reset ZX for detect ...
