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Spectrum +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 …
That test program assumes that the contended RAM ... -
This is how a DivMMC EnJOY! comes to life![url]https://www.youtube.com/watch?v=XFjUFmS1XJE[/url]
... /> Flying Shark was also my test program, when I tested Spectra interoperability ... -
Random object placementI'm looking for some advice on placing objects randomly in a game. I have a routine that reads a table and prints the corresponding object: 0 prints…
[QUOTE=Jerri;817782][QUOTE=Einar Saukas;817774]I just run a simple empirical test (plotting randomly on screen) to compare the random generator algorithms mentioned here:
[CODE]10 FOR f=0 TO 20000
20 LET y=USR 32768: IF y -
Testers for new z88dk clibA long (long, long, long) time ago a few people offered to help test the new clib in z88dk. Much time has passed since then and I won't hold people,…
... so the fix for your program looks like:
... tell you that your original program has problems.
... extern data structures. In your program above, that's "ff_dkud3_Echo" ... declares that symbol to your test program:
[code]
... -
ZX Resets when loading programs?Hello, I have a weird issue with my new ZX Spectrum issue 2 16K. The ZX is in great condition, BASIC works and the RAM Diagnostic PEEK 23733 reports …
Pretty sure this is a lower memory problem, any way you can change the 4116 chips, or change the positions? Zxzigg has a memory test program try running that first. -
ZX Resets when loading programs?Hello, I have a weird issue with my new ZX Spectrum issue 2 16K. The ZX is in great condition, BASIC works and the RAM Diagnostic PEEK 23733 reports …
Aha! Success :D I downloaded Speccy tape for my iphone, and when I loaded the test program through the iphone to amp to ZX it loads! :) Thanks man -
Floating Point Package Math48<br>I came across a neat little floating point package for the z80 and I'm adapting it now to work with z88dk and sdcc. There is an interesting…
... updated. If you try the test program and notice anything wrong, do ... -
Features that are still wanted in Spectrum emulation.Features that are still wanted in Spectrum emulation. 4 USB joystick/gamepad input for real multiplayer games - Yes, Bomb Munchies.... - Sinclair 12…
... after I sent someone a test program to run which did exactly ... -
Floating Point Package Math48<br>I came across a neat little floating point package for the z80 and I'm adapting it now to work with z88dk and sdcc. There is an interesting…
... showed up in a test program showing a 3d plot ... its size. Yet the program was fractionally slower than ... lot in this particular program. Floats are slow on ... practice people / machines generated test vectors, kind of like ... states in a sw program is huge and ... -
Timex contended memory timings, the TS2068 kludge board and EXROM at $4000 - $7FFFI haven't seen this documented anywhere yet so I thought I'd share my findings. I've been investigating contended memory timings on the Timex Sinclai…
... the $4000-$7FFF range (a test program using the beeper like mentioned ... -
Floating Point Package Math48<br>I came across a neat little floating point package for the z80 and I'm adapting it now to work with z88dk and sdcc. There is an interesting…
... showed up in a test program showing a 3d plot ... its size. Yet the program was fractionally slower than ... lot in this particular program. Floats are slow on ... i.e. if a program produces completely different answers ... how parts of a program interact. I have seen ... -
New version (v0.31) of ZX DiagnosticsHi all,<br><br>Just wanted to let people know that I've released a new version of the Spectrum Diagnostics into the wild.<br><br>These were originall…
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I not show Your test program ?
With digiboard all is ... -
Dead SpectrumHello guys, I've just bought a dead Speccy 48k (Rubber Keyboard Issue 3 board). Basically, when powered on it initially appears to boot up ok, but in…
... is failing, use of a test program (that does not need [i ... /Cartridges/Interface2_RC_TestCartridges.htm"]Interface 2 test cartridge/ROM[/url], one of ... -
Dead SpectrumHello guys, I've just bought a dead Speccy 48k (Rubber Keyboard Issue 3 board). Basically, when powered on it initially appears to boot up ok, but in…
... is possible to program a EPROM with a test program and with a ... -
Spectrum +3 blinking yellow/blueI received a +3, which only gives a yellow/blue blinking border during initialization. Pressing BREAK when powering on does not work, neither does a …
I was afraid it´s faulty RAM - thanks Amstrad for removing the RAM sockets on a +3...
Yes Brendan, I do have ZXC3 (and ZXC4) cartridges. Would love to try your test program. My address is shown on my web page. -
1-Bit Sound AccuracyI'm hoping someone can give this snapshot a try on a real machine (just press enter to start the music): https://drive.google.com/file/d/0B6XhJJ33xp…
... it be more scientific to program something to generate a frequency ... />
Yes, the beep.tap test program is a primitive attempt to ... -
Sudden death of ZX Spectrum 48KHello A friend gave me a 48K rubber keyed Spectrum. I brought it home, hooked it up to my little TV and powered it up. I was very happy to see t…
... , he was never asked to test the +5V rail. As the ... /EPROM, a ROM based RAM test program should confirm this.
Sudden death of ZX Spectrum 48KHello A friend gave me a 48K rubber keyed Spectrum. I brought it home, hooked it up to my little TV and powered it up. I was very happy to see t…
... "]
As Zorn has said, test lower RAM, it's all ... do for now, Did you test the output of the 7805 ... /EPROM, a ROM based RAM test program should confirm this.
test firmware? Also, I have a ...Sudden death of ZX Spectrum 48KHello A friend gave me a 48K rubber keyed Spectrum. I brought it home, hooked it up to my little TV and powered it up. I was very happy to see t…
... be possible to store a test program in the battery backed RAM ... with a ROM based RAM test. It's not cheap, but ... more than just run a test program.
Links:- http://www.fruitcake ... /brendanalford/zx-diagnostics
That test program can run on any ROM ...Issue 4A, tests complete fine but get odd crashing problemHi all, I've got an issue 4A which has had all of its lower RAM replaced, TR4, TR5 as well as its CPU. It originally had quite high voltages (20-3…
... /> Can you run a RAM test after running Manic Miner and ... you try a simple BASIC test program?
[b][i]Mark ...Leading Zeroes on a Score in BASICI'm trying to print the score with leading zeroes such that it's always 6 characters wide, i.e.: 000010, 000150, 006100 etc. I quickly knocked thi…
... it in the "analysing program variable usage" thread back ... the start of the test program to the end of ... variable declarations and/or program lines. (I didn' ... built into a complete program the search times for ... variable data and program lines are always going ...Database model ZXDBRecently, I have been trying to figure out how to provide my contribution to whoever takes over WoS archive rework next... So I came up with this: …
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The software is a test program that happens to reside on ...Speeding up programs by hacking the SysVarsPositively pleased to properly discover this area of the forum! I have a couple of recent tricks that might be of interest - they're probably old hat…
... setting PROG to NXTLIN. The test program simply fills the screen with ... %[/b].
The next test converted the variable names to ... %[/b].
My final test was to take the above ...ZX Spectrum+ new membrane not working properlyHi! I recently got myself a ZX Spectrum+ . It had the classic broken membrane problem (most keys didn't work and those that did were wrong). So I or…
... do not have another spectrum/ULA to test it. But I was ...Head over Heels on 128KI noticed an interesting behavior of Head over Heels on 128K Spectrums, especcially with +2A/+3 machines. The game works, but after loading game, lo…
... ="http://www.drumfu.com/HoH-128-Test-3.z80"]snapshot[/url] with ...Head over Heels on 128KI noticed an interesting behavior of Head over Heels on 128K Spectrums, especcially with +2A/+3 machines. The game works, but after loading game, lo…
ZX Spectrum 48k issuesHi all! A couple of days ago I bought my first 48k Speccy off ebay (I already own a beautiful QL expanded with QubIDE interface and 640k ram). It was…
... faults, is a ROM based test program. A number of interfaces/ expansions ... /EEPROM/flash memory). A RAM test program running from ROM, does not ...Testing your codeOk, guys, again I here with question. How do you test your works? I understand how to test functions and procedures mathematically (for example, g…
... done by running the program under test through a simulator which ... for cpu state after the test program has run to determine if ...
If your subroutines under test can be verified by looking ... extract only the subroutines under test from your project as ...Any way to Vsync Spectaculator 8?I am using Spectaculator 8 for the Demoscene mostly, and have discovered that my monitor supports 50Hz, like a real Speccy. Unfortunately, the tearin…
... smooth scrolling, check this noflick test program:
[URL=http://wikisend.com ...c64 .sid player coming soon to specy 128!!!c64 .sid player coming soon to specy 128!!! the first old version uses only square waves, 4 years ago: https://www.youtube.com/watch?v=6CKt9noxA7s…
... editor, menu system and self-test program
ROM 1: 128k syntax ...
