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DivIDE and RWAP's DiwIDE*Opps, sorry, wrong forum, this thread must be in hardware topic.* I was planning to get a divide from Rwap, but I'm too afraid of long way the devi…
... wonder how much did you test this "rwap" extension since ... as one would do to test it. So the 128k ... NOT work under "rwap" mode). I am mentioning this for ... the snapshots work under rwap mode or not.
... to use it and test stuff before the hardware ... -
Cool BASIC tricks and tips!Following on from Dunny's excellent suggestion of a compendium of BASIC tips + tricks, I believe it would be better to have a topic dedicated to it. …
... REM IN READING WITH ISSUE TEST
1010 LET A=IN ... : REM ISSUE 2 OR 128K MODE
1050 RETURN
[/code ... -
Well I'm excited, but I guess you might not beHehe this is as far as I got today, a silly little border program: [PHP] ORG 32768 PROGGY: LD C,255 ; We loo…
... see the relative performance of mode 1,2,3,4 for ... same speed (6MHz minus contention), mode 1 is slowed down a ... use for your border stripes test ;-)
Si -
spectaclator and windows vistaanyone know if it will work on vista- I dont want to have to pay up again for a new version...
... , if I change the compatibility mode to "Windows 95", then the ... minutes under VISTA as a test though, so don't know ... -
128k dead, no TV signalI got 128k spectrum (heatsink model) from a friend of mine. He told me that speccy is dead, and he doesn't know what's wrong with it. When I plugged…
If the ULA is dead (or "wrong"), you ... always tell though since the ULA is responsible for so many ... a +2 ULA into their toast rack 128 and test the damn ... -
+3 hardware without a fixer boardJust thinking about plugging random hardware into a +3 (from something mentioned on another thread), and I wondered... I know some hardware won't wor…
... haven't been able to test it out because my 48k ... will work in 48K BASIC mode, as the enhanced printer port ... only available in +3 BASIC mode. The manual does not cover ... -
Did I killed my Speccy ???Hi guys, 1 minute ago I was working on my 128 +2A... But I made a mistake : I cut the gound on the PSU plug of the computer, and I forgot to resolde…
... you've taken out the ULA chip too, in which case ... a replacement part for that ULA and you certainly won't ... SRAM that I need to test. All the smaller DIP packages ... even if you get the ULA off there's the problem ... -
Atic Atac, the +3 and Multiface.Hello :smile: I have a Spectrum +3 with Multiface 3 attached and working well. I have discovered that at least JetPac and Atic Atac (all Ultimate …
... only run in 48k BASIC mode. in other +3 modes the ... to tape in 48k BASIC mode.
Question; how can ... can't test this), but how about going to 128K Mode, typing ... -
DMA interface for ZX Spectrum[url]http://velesoft.speccy.cz/data-gear.htm[/url] This is internal DATA-GEAR interface for any 8-bit computer with Z80CPU. Use Direct Memory Access…
... MB02 interface.
You can test it in REALSPECRUM emulator (set ... 4,5,6,7,8T mode).
Yes, is possible full ... -
Dead Spectrum +Hi all, I've recently dug out my old Spectrum + with the idea of repairing it. When I last looked at it, when I was much younger, I was soldering a …
... ) nutshell:
Change the ULA.
If no picture ... after modulator swop, recheck the ULA and change TR1/2 (replace ... with BC547) if ULA ok. Change the LM1889 if ... known good RAM, test removed RAM.
Test and replace the ... -
toasted soeccysHello, ive jsut bought a pair of speccys on ebay (one 16k issue 2 & a prob 48k issue 3) unfortunaly the genius who sold them tried to see if the wor…
... you haven't damaged those ULA chips.
PM me ... ) nutshell:
Change the ULA.
If no picture ... after modulator swop, recheck the ULA and change TR1/2 (replace ... known good RAM, test removed RAM.
Test and replace the ... -
toasted soeccysHello, ive jsut bought a pair of speccys on ebay (one 16k issue 2 & a prob 48k issue 3) unfortunaly the genius who sold them tried to see if the wor…
... ' voltages (+12v) is a switch mode power supply, which gets regulated ... the oscillator.
Switch mode supplies are pretty good at ... -
Dead Spectrum +Hi all, I've recently dug out my old Spectrum + with the idea of repairing it. When I last looked at it, when I was much younger, I was soldering a …
... the ula. Do you guy's know of a trustworthy test that ... you can do on the ula to ensure ... -
Features that emulators don't haveI believe most of us use more than one emulator, mainly because there isn't one emulator that has all the features we need or want to use. We also kn…
... the Speccy when in 48K mode, to simulate the metal fatigue ... 't present in the next test version.
Si -
TV Modulator. Can it be repaired?Is it possible, to repair tha TV modulator (after removing it) if it gives wavy picture? I replaced both transistors (tr1/2) and both electrolytic ca…
... same.[/QUOTE]
/sarcasm mode on
You mean ... ? Damn! :D
/sarcasm mode off
I've ... order (Ic 22 on the test machine, going to IC slot ... -
What's the most probable......cause for this on a grey +2? (z80 is excluded) [url]http://img376.imageshack.us/img376/8087/plus2hk9.jpg[/url]
... that, what should be next? ULA? PCF1306P...?[/QUOTE]
The ... ZX84 standard cell.
ULA - only sure source is a ... too - I think you can test a 128 Toast rack ROM ... -
What's the most probable......cause for this on a grey +2? (z80 is excluded) [url]http://img376.imageshack.us/img376/8087/plus2hk9.jpg[/url]
... and it started running the test and it ended like this ... below. I did swap the ula from another dead grey 128 ... -
Atic Atac 128k version?Can anyone confirm that the version of atic atac in the 'UPTG : The Complete Works' is in fact 128k compatible? that is can you load it on a spectrum…
... it switches to 48k locked mode. So the plus3dos should stop ... test it try a snaphot of other games in 48k locked mode ... -
Problem with my speccy 48+My machine boots up but apon booting it freezes and you can see feint grey horizontal 1 pixel lines going down the screen. Is this fixable at all?
... a thermal fault, could be ULA, Z80, ROM, RAM (etc etc ... . Replace this component and re-test the compyter.
2 ... -
Amstrad +2 Diagnostic BoardCan anybody help I wish to buy the Diagnostic Board that connects to the I/O strip at the back of the Amstrad ZX Spectrum +2. Many thanks Martin
... 8 LEDs, so the memory test can be completed, and that ... use screen RAM or the ULA
* ability to program the ... -
On a 48K issue 6A......how can i isolate the 32K block? I want to test if there is any fault on the 4116's , leaving the 4532's out of the equation. Will removing the …
... .[/QUOTE]
If the ULA is working fine (since you ... rest by a small switch mode power supply. -
On a 48K issue 6A......how can i isolate the 32K block? I want to test if there is any fault on the 4116's , leaving the 4532's out of the equation. Will removing the …
... entire bus back to the ULA and CPU and supporting logic ... job to go through and test it all. (I know, I ... -
On a 48K issue 6A......how can i isolate the 32K block? I want to test if there is any fault on the 4116's , leaving the 4532's out of the equation. Will removing the …
... ram ic to rom, logic, ula and cpu. Every friggin track ... .
I did also test the tracks of upper ram ... -
It's fitting...... that in the very month that the 25th anniversary of the Speccy falls on, I'm just finishing up making my first ever Spectrum peripheral. It's a …
... worked out what your "memory" test is going to do (i ... plans do you have for ULA testing?
[QUOTE=Marcelo ... -
Testing RAM Chips After RemovalHi I am going to use Winstons Hot Air Gun method of removing the RAM chips from a 4S circuit board. I wish to check the RAM chips, I have a Logic Pr…
... RAM, the best place to test them is actually still on ... uses LEDs so if the ULA is also toast, you can ... -
Testing RAM Chips After RemovalHi I am going to use Winstons Hot Air Gun method of removing the RAM chips from a 4S circuit board. I wish to check the RAM chips, I have a Logic Pr…
... testing the routines. The memory test code itself runs entirely in ... the RAM - but not the ULA since this controls the Z80 ... -
RGB OutputWas there ever a device available for the 48 that had a RGB output ? As an alternative , what about using a pc monitor (iirc these have seperate syn…
... monitor (or monitor in TTL mode (as some CBM models have ... solder input lines directly to ULA will get much ccleaner picture ... -
New Spectrum projectsI know that someone started a topic very similar long ago ( I think It was Tony), but its been a while since it was replied, so It would be nice if e…
Well, I'm making a hardware project to help diagnose dead Spectrums (so as to help bring more of them back to life). So far, the memory tester is done, need to now add code to run a CRC on the ROM and test various ULA functions. -
New Spectrum projectsI know that someone started a topic very similar long ago ( I think It was Tony), but its been a while since it was replied, so It would be nice if e…
Reason for strange display layout?I have always wondered if there is any technical reason behind the strange layout of the display file or why did Sinclair choose to do it this way?
... .
[quote]
Screen mode 2 on the SAM Coup ... interesting to test out. The ts2068 has the same video mode but ... to port SP1 to this mode and I'll attempt the ...
