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ZX Spectrum issue 6a - yellow border problem<p>Hello!</p><p>I have problem with my Sinclair ZX Spectrum issue 6A, 48K. </p><p>I have changed low memory (all 4116 IC's) and coil, all electrolyti…
... CPU does not react on reset, might be that Mark is ... at pin6 of the CPU (Z80). The meter should show around ... -
ZX Spectrum issue 6a - yellow border problem<p>Hello!</p><p>I have problem with my Sinclair ZX Spectrum issue 6A, 48K. </p><p>I have changed low memory (all 4116 IC's) and coil, all electrolyti…
General Z80 fault finding:-
Check the ... /> Using your 'scope, check that /RESET is high (pin 26) unless ... the reset button (where fitted) is pressed ... -
The 'Interface 1bis' as tape player<span class="wysiwyg-font-size-medium"> </span><p><span>The latest function added to the ‘Interface 1bis’ is that of a tape player. Files stored …
... the game browser menu is reset the machine, then just type ... (basically my entire TZX/TAP/Z80 library) to the SD card ... -
Tau Day<br>By popular demand (well, demand of one, which is highly popular in the sorts of things I do :D ), here is a small celebration of tau day, June 28…
... to float than the z80 library does :P ... same precision as the z80 library. I only ... AC' = asinh(x)
; carry reset
;
; fail if ... ' = cosh(x)
; carry reset
;
; fail if ... -
Buddy 0.1 demo[url="http://wischner.co.uk/downloads/app.tap"]The tape is here[/url]. Load it, then enable kempston mouse emulation, then reload it. [url="https://g…
... line spacing, draw mode (xor, reset, or), colour, colour mask are ... /libsrc/_DEVELOPMENT/font/fzx/zx/z80/asm_fzx_putc.asm?revision=1.12 ... -
Peeking the contents on screen? How?You will have to forgive me for growing up on the C64, but I know I can peek the location of a character (1024 is top left from memory) and the peek …
... stack space used by the z80 CPU.
The system ... like. CLEAR doesn't actually reset that memory to 0 or ... of that character. And the Z80 can add 256 to a ... -
Game development guidesHello all, I want to get into game development for the ZX Spectrum and would like to know where I can find some helpful guides. I've looked around t…
... /> ret po ; po = P/V reset so in this case it ... 3-130 in http://www.z80.info/zip/ZilogProductSpecsDatabook129-143.pdf ... -
Game development guidesHello all, I want to get into game development for the ZX Spectrum and would like to know where I can find some helpful guides. I've looked around t…
... /> ret po ; po = P/V reset so in this case it ... 3-130 in http://www.z80.info/zip/ZilogProductSpecsDatabook129-143.pdf ... never knew about this NMOS Z80 bug. Even worse, I'm ... -
Bubble Monkey BrosA little collect em up that can be played by one or two players (in collaborative mode, each player can do some of the things that red monkey can do …
... can Z80 assy and other oldskool stuff, but this soft is not ... -
Looking for help putting music on a new gameWell I am putting togetehr a new AGD game and i really really really need somebody to help putting an AY tune in it the game has characters taken…
The only Z80 music system I have used ... /> The composing soft works on Windows, players on various Z80-machines. When ... -
Spectrom interface ?Hi all, I got 2 of this devices ... :) [img]http://forest.no-ip.org/wos/spectrom/20151006_151428.jpg[/img] [img]http://forest.no-ip.org/wos/sp…
Or there is a mechanism that uses the Z80 CPU along with that 8 pin chip (which could be a micro controller) which copies the data in the EPROM/EEPROM to RAM on reset or power-up...
[b][i]Mark[/i][/b] -
Spectrom interface ?Hi all, I got 2 of this devices ... :) [img]http://forest.no-ip.org/wos/spectrom/20151006_151428.jpg[/img] [img]http://forest.no-ip.org/wos/sp…
... a mechanism that uses the Z80 CPU along with that 8 ... EPROM/EEPROM to RAM on reset or power-up...
[b ... just a copy-routine that Z80 then performs. Hard to tell ... -
How did bank switching work on the 128K Spectrums?I'm new to Z80 and ZX Spectrum. So I was wondering how the 128+ models managed to work with more than 64K of memory? I'm somewhat familiar with h…
... need to know more about Z80 I/O ports). These are ... changing the set (1) and reset (0) bits in these registers ... -
The I register and IM 1Hi al! I've been doing some coding, replacing the BASIC ROM with my own code and upon examination of a few 16Kb cartridges, all the ones I've look…
... around in a few more Z80 based games in MAME to ... ZX Spin debugger immediately upon reset, the I register holds 63 ... -
Faulty 48+ Help NeededHi, This is what I get when I plug in the spectrum, this is tuned in. Vid shows a reset. Any ideas, or pointers on the first thing to check. Keyboa…
... react when I press the reset switch.
... 120 seconds, the Zilog Z80 is hot enough to ... it to and the Z80 barely got warm.(Assuming ... the z80 temperature is comparable ... sticker was for on the Z80
:-).....hmm....maybe ....
Faulty 48+ Help NeededHi, This is what I get when I plug in the spectrum, this is tuned in. Vid shows a reset. Any ideas, or pointers on the first thing to check. Keyboa…
... in the socket for the Z80 and fit a brand ... new Zilog Z80, this went without a hitch ... I get with the new Z80
[url]https://www. ... then again with the new Z80, but this time with ... m pressing the reset button.
The new Z80 is running ...Faulty 48+ Help NeededHi, This is what I get when I plug in the spectrum, this is tuned in. Vid shows a reset. Any ideas, or pointers on the first thing to check. Keyboa…
... />
I pressed the speccy reset switch on the side and ... .
Lower ram replaced
Z80 replaced
Baffled but ...Best Monty Mole gameI think this is quite difficult. The top 3 Monty games IMO were Wanted, Monty on the Run and Auf Weidersehn. Too pick the best is quite difficult. …
... !
I also have a soft spot for Wanted. However there ... can end up having to reset the game.
Monty on ...Power issues on a 6A 48 K SpectrumHello all! I decided to take another look at my 6A Spectrum that I broke via a bad joystick adapter, I’ve removed the bottom 16K ram and replaced…
... this damages the Z80 itself. Try to exercise the reset button and ... changes, which is what the Z80 does very early in the ... . If it does not, the Z80 is probably shot.Scary video clipI found [url="https://www.youtube.com/watch?v=04rDK7zY7_Y"]this[/url] video on YouTube. It is really scary, but otherwise of great educational value …
... cannot be used, until reset. This apply to the ... , when loading a 128K soft or game, the procedure ... . Activate IF1bis.
3. Reset the Spectrum (when the interface ... locked and the 128K soft doesn't work. ( ... Jetman - if you reset the Spectrum when IF1bis ...Internet enabling a SpectrumHi, Yonks ago, I floated the idea of using one of these: http://www.mycal.net/old/wsweb/img/s7600a.pdf ..to Internet enable a Spectrum. I d…
... design and storing the base Z80 code (network and filesystem driver ... RAM on boot so the Z80 could execute it, and storing ... ground plane. And adding a reset switch! And fix the footprint ...Elite - Ship Boarded by PIRATES!Yesterday I sat down behind the debugger and decided to work out what causes the "Ship Boarded by PIRATES!" event that can sometimes, very rarely, ha…
... am not so rusty with Z80 assembly this days so I ... Pirates mission so it will reset on next hyperspace. So if ...New game: SolarGun 1.0[img]https://dl.dropboxusercontent.com/u/75238938/solargun4.png[/img] [img]https://dl.dropboxusercontent.com/u/75238938/solargun5.gif[/img] (that g…
... not work, because according to Z80 Manual, you have to re ... it.
[quote]From Z80 Manual, Page 18
Section ... IFF1 and IFF2 are automatically reset, [b]inhibiting further interrupts until ...Definitive list of games incompatible with +2A/+3 and of compatible versions (if any)I am trying to compile the definitive list of games which are incompatible with the +2A and the +3 and of their compatible versions, if they are pres…
... br />
Skyfox - Dro Soft (Spanish language). Note: jp provided ... />
Archeo: System reset at game over. [URL="http ... Whirled: Corrupted graphics and system reset after game start. [URL ... : Corrupted graphics and system reset after game start. [URL ...ZX Spectrum CartridgesI have been thinking of "cloning" ZX Cartridges for a while (case, board and silicon skirt), to be able to make new releases or replace damaged cartr…
... other read or write would reset the state machine, and ... all the accesses by the z80 running the program aaaaargh. ... certain address range count to reset it and set the ... that there's no reset signal at the cartridge ... gate to generate a reset pulse for the CPLD ...Suggestion for ZX Uno improvementsI really enjoy my ZX Uno, however, I do see some improvements that I think could be made to the Uno. 1) When you press CTRL-ALT-Backspace or when …
... except to SD card either Z80 or SNA would be fine ... , etc. Note that when you reset the device, the counter resets ...ZX Spectrum CartridgesI have been thinking of "cloning" ZX Cartridges for a while (case, board and silicon skirt), to be able to make new releases or replace damaged cartr…
... behaviour.
From Z80 Manual
[quote]Memory Refresh ... instruction.
NOTE: Reset also sets R register to ... br />
NOTE: All Z80 repeat instructions, like LDIR, LDDR ... increment correct, due to some Z80 quirk ?
Or
ZX Spectrum CartridgesI have been thinking of "cloning" ZX Cartridges for a while (case, board and silicon skirt), to be able to make new releases or replace damaged cartr…
... .e. re-start Z80 (but not use RESET) into a similar state ...
