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ZX Nuvo 128..Hi There, I have built the ZX Nuvo 128 by Superfo, but it has a problem. The machine is working, but the video signal is completely bonkers. I've …
... editor, menu system and self-test program
ROM 1: 128k syntax ... -
Not bored with the Boards.Going through some old tapes stored rather badly I came across an unlikely item that that I must have stored away quickly with other low grade items …
... between BASIC and a system test program in the EPROM.
[*] ... the service manual).
[*]Have test links that can easily be ... video modified.
[*]Have suitable test points/sockets/pins so it ... don't currently have a test Spectrum that meets the ... -
ZX Spectrum Test PCB I recently read about one of these (I think it may have been the Retroleum site but I am not sure) and I thought "What a great idea" . As pictured …
... between BASIC and a system test program in the EPROM.
[*] ... the service manual).
[*]Have test links that can easily be ... video modified.
[*]Have suitable test points/sockets/pins so it ... don't currently have a test Spectrum that meets the ... -
z88dk terminalsto set up a terminal a bunch of numbers are needed: m4_zx_01_output_fzx(_window_1, 0x2330, 0, 0, 1, 14, 1, 19, 0, _ff_ao_Prefect, 14, 0, 14, 8, 1…
... fix the problem.
Test program:
[code]
// zcc ... -
Joystick IssuesHi guys, I'm having a few issues getting joysticks to work well on my Spectrum 128k. I've got a Power Play Joystick interface and I've tried it with…
... /> You can test the joystick and interface with this BASIC program:
[u]Kempston Joystick Interface Test Program[/u][code]
10 CLS ... -
Need help from people with a +2A/+3Started a topic [url="https://www.worldofspectrum.org/forums/discussion/55141/need-help-from-people-with-a-2a-3"]here[/url] to get a broader reach, b…
Here's a simple (and not very pretty!) test program that should sync to exact cycles on a +2A/+3 and read data from port #0FFD.
https://1drv.ms/u/s!AmOOhLw8lDDygQTgACzb-YoUa2fp -
Need help from people with a +2A/+3Started a topic [url="https://www.worldofspectrum.org/forums/discussion/55141/need-help-from-people-with-a-2a-3"]here[/url] to get a broader reach, b…
... simple (and not very pretty!) test program that should sync to exact ... -
Need help from people with a +2A/+3Started a topic [url="https://www.worldofspectrum.org/forums/discussion/55141/need-help-from-people-with-a-2a-3"]here[/url] to get a broader reach, b…
... simple (and not very pretty!) test program that should sync to exact ... Saphier's picture from that test program looked far nicer than I ... -
Need help from people with a +2A/+3Started a topic [url="https://www.worldofspectrum.org/forums/discussion/55141/need-help-from-people-with-a-2a-3"]here[/url] to get a broader reach, b…
David Saphier provided a screen shot of my simple test program and it shows a sequence of 15s before reading the display memory. The final attribute byte at 23295 is 56 (57 when read). Why 15? Dunno!
http://oi66.tinypic.com/2n8of9e.jpg -
Need help from people with a +2A/+3Started a topic [url="https://www.worldofspectrum.org/forums/discussion/55141/need-help-from-people-with-a-2a-3"]here[/url] to get a broader reach, b…
... screen shot of my simple test program and it shows a sequence ... -
Need help from people with a +2A/+3Started a topic [url="https://www.worldofspectrum.org/forums/discussion/55141/need-help-from-people-with-a-2a-3"]here[/url] to get a broader reach, b…
... from writing a meticulously calculated test program (or, indeed, and emulator) which ... -
Thought this would be simple... Z80Hi Folks, Started to read "Beyond simple BASIC, Delving Deeper into your ZX Spectrum" by Dilwyn Jones. This is a great book and I came across the…
...
; ------------------------------------------------------------------------------[/code]
BASIC test program:
[code]100 ... -
Thought this would be simple... Z80Hi Folks, Started to read "Beyond simple BASIC, Delving Deeper into your ZX Spectrum" by Dilwyn Jones. This is a great book and I came across the…
... BASIC
; ------------------------------------------------------------------------------[/code]
Test program
[code]100 ... REM Setup Test Screen
110 GO SUB ... -
Need help from people with a +2A/+3Started a topic [url="https://www.worldofspectrum.org/forums/discussion/55141/need-help-from-people-with-a-2a-3"]here[/url] to get a broader reach, b…
... /> But, if I load the test program again, the flicker disappears again ... -
What's going on inside this ZX Spectrum? [Newbie]Hello folks Last year I got hold of a ZX Spectrum. At the time it appeared to boot up fine, but more recently when I've tried to boot up I've had…
... an expansion that has a test program in a ROM (or equivalent ... , control and data busses, the test program can check the RAM and ... -
Troubleshooting my +2To put this in context: a while back (i.e. late last year and earlier this year) I was looking to put together a compilation of modern Spectrum games…
... banks.
Run a memory test program to check...
The ... -
Troubleshooting my +2To put this in context: a while back (i.e. late last year and earlier this year) I was looking to put together a compilation of modern Spectrum games…
... banks.
Run a memory test program to check...[/quote]
I ... I had one that could test the entire 128K - all I ... PEEK or two that will test that the original 48K is ... put the volume control - no Program: header, nothing. But when I ... -
ZX Spectrum +3 repairI have my first +3 here, and it needs repairs. Hoping someone here can help me out. When I power it on I get this screen with black and white line…
... have already run the memory test program from GitHub ([url=https:// ... />
A second memory test program came courtesy of [url=https ... was JpC's own memory test program found at zx.zigg. ... .
The third test program came courtesy of weiv in ... -
Help with a TIMEX TC2048 and memory problemBought a 2nd hand Timex TC2048 but unfortunately I detected a problem with the machine which is preventing it from working properly. I believe it …
... /> Have you ran a memory test program?
Also if not, have ...
10 CLS : PRINT "enter test value"
20 INPUT d ... NEXT a
Good test values are 0, 85, 170 ... -
Fuse for macOS 1.5.1 ReleasedA new version of Fuse for macOS has been released at the dedicated sourceforge project: https://sourceforge.net/projects/fuse-for-macosx/ Note …
... you create a Spectrum test program that could test the proper operation of ... -
Fuse for macOS 1.5.1 ReleasedA new version of Fuse for macOS has been released at the dedicated sourceforge project: https://sourceforge.net/projects/fuse-for-macosx/ Note …
... you create a Spectrum test program that could test the proper operation of ... ), and attach my test program as well. All the test programs I wrote ... -
Making sound using the BEEPER in AssemblyI had a look at the the documentation but it doesn't make sense to me. To make music just the beeper all I have to do is send ones and zeros to one o…
... ?
Note that your test program can't be used to ... -
Making sound using the BEEPER in AssemblyI had a look at the the documentation but it doesn't make sense to me. To make music just the beeper all I have to do is send ones and zeros to one o…
... contention does not delay the program execution, but only the output ... ="utz;943934"]Note that your test program can't be used to ... -
TileMap test releaseI've been playing with a live map emulation idea, which currently supports just Jet Set Willy. You can download an early (Windows only) version of i…
... quick hack proof-of-concept test program. Once I've done that ... -
TileMap test releaseI've been playing with a live map emulation idea, which currently supports just Jet Set Willy. You can download an early (Windows only) version of i…
... quick hack proof-of-concept test program. Once I've done that ... -
Artillery - projectile motion gameI started writing this around 25 years ago and abandoned it due to performance issues, and a lack of physics knowledge. Bandersnatch on Netflix fille…
... to work in a simple test program with DRAW instructions, it fails ... -
+3 - beeper sounds but no AY musicHi guys I am repairing a plus 3 revision 2 board that had no sound at all. Using schematics from https://zxnet.co.uk/spectrum/schematics/ I manage…
... .
I rewrote the test program above in machine code and ... -
Rod-land - struggling to get working on my real +2 (grey machine)Hi Everyone, I've had a week enjoying tinkering with my +2 and there are only a few games I have not managed to play on my +2 that I enjoyed back …
... if there is a memory test program for the Spectrum to ensure ... -
ZX Spectrum rescued from a friend, has Issues.Hi guys, I've recovered this ZX spectrum 48K from a friend. It's a 1984 ISSUE 6A. He told me the last time it was turned on was about 30 years ago!.…
Okay, here is another simple test program. Can you run this:
[ ...
