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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 ... -
48K light gun on a 128K ZX SpectrumHello I have a 128K ZX Spectrum. I want to use a Cheetah Defender with a DE-9 plug (Kempston interface wired) with it. I am aware that normally it…
Where are you pointing at? Those light guns only works on CRT TVs at 50/60 Hz. LCD, TFT, plasma, LED TVs won't work.
If you use a good old TV and it doesn't work, maybe there is a test program that checks trigger and photo diode status. -
Kempston interface schematic: wrong IC?Hi! I'm trying to learn about the inner workings of the speccy, and I thought that building a kemspton interface would help me learn about things lik…
... correctly?
Using a test program, what results are you getting ... -
Saving BASIC program from Spectrum to PCSo I did something stupid. I started writing a program on the Spectrum, and before I knew it I am on line # 1430 of my BASIC program. I now have had…
... trying this, use a short test program to check that the audio ... an epic program :P
The best way to test, is ... -
Using a Mayflash MD USB Adapter with Spectaculator on Windows 10Using a Mayflash MD USB Adapter with Spectaculator on Windows 10 First, plug the Mayflash MD USB Adapter into a USB port and let Windows do it's t…
... [/url]
I found a test program for Kempston Mouse with an ... option to test Kempston Joystick and display it ... -
Why don't the variables print where I told them too?I wrote the following program to experiment with creating sounds using 3 notes of BEEP and having the ability to change the notes up or down one at a…
... much to my short Beeper test program, more features, it starts to ... could be called to (1) test different tones (2)different durations ... to use when writing another program that will use all that ... -
Why don't the variables print where I told them too?I wrote the following program to experiment with creating sounds using 3 notes of BEEP and having the ability to change the notes up or down one at a…
... much to my short Beeper test program, more features, it starts ... use when writing another program that will use all ... was a (public domain) program like this for the (brilliant ... make it the startup program on a disc, and ... the name of the program, and if it was ... -
Why don't the variables print where I told them too?I wrote the following program to experiment with creating sounds using 3 notes of BEEP and having the ability to change the notes up or down one at a…
... with your advice Dunny!
Test Program
5 LET a=10 ... -
Why don't the variables print where I told them too?I wrote the following program to experiment with creating sounds using 3 notes of BEEP and having the ability to change the notes up or down one at a…
... with your advice Dunny!
Test Program
5 LET a=10 ... -
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 ... -
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 …
... a spare ,same type , ULA to test . But it it did not ... back to the known working ULA and it did not work ... RAM chips (maybe only the ULA is sensitive in this way ... -
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 ... -
What is the maximum fps the spectrum can achieve?I have been doing some reading and from what I understand the Spectrum outputs a PAL signal, but that means it will display @50fps or @25fps? If t…
... of chasing the raster, the program can either be changing the ... screen. In the Spectrum, the ULA generates the memory address and ... if your program knows the exact time when the ULA issues the ... , the interrupt from the ULA), and your program has the exact right ... -
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 ... -
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 ...
