-
Experimenting with turboloadersHello, My first post, having lurked here for a while. I'm a lifelong computer nerd, Spectrum fan since childhood in the eighties, and have recently…
... bitmask; e: bitmask for reading EAR
ld de,0x4040
and e ; look at EAR port
cp d ; compare ... iterations; the zero pulses between 9 and 10 iterations; the zero ... -
No sound from speaker.Help! My trusty 48k has stopped giving me sound out of the speaker. It does however give me sound from the EAR socket. I've tried swapping the spea…
... one or both of diodes 9 and 10 are in trouble ... the same source as the EAR/MIC is, so it must ... -
Experimenting with turboloadersHello, My first post, having lurked here for a while. I'm a lifelong computer nerd, Spectrum fan since childhood in the eighties, and have recently…
... and 0x41 ; look only at EAR/BREAK bits (7T)
... add a,a ; shift EAR bit into sign bit & ... )
rla ; place EAR bit in carry (4T)
9 cycles to detect both ... -
Can anyone identify what this lead is for?Same as light gun on one end, 4 pins on the other end: [IMG]http://i269.photobucket.com/albums/jj79/Hairyrecords/Forum%20Stuff/P1130978.jpg[/IMG]
... day and it took about 9 months before it arrived.[/QUOTE ... another socket next to the lightgun socket on +2/3, not ... -
IF1Bis problems. The Edge of the Spectrum...Advice is sought from the learned on WoS. I just bought an Interface 1Bis from sunny South Africa. It arrived fast, but unfortunately doesn't work.…
... won't light up.
9. Release the joystick
10 ... an audio cable from the ear connections
2. I plugged ... -
IF1Bis problems. The Edge of the Spectrum...Advice is sought from the learned on WoS. I just bought an Interface 1Bis from sunny South Africa. It arrived fast, but unfortunately doesn't work.…
... won't light up.
9. Release the joystick
10 ... an audio cable from the ear connections
2. I plugged ... -
Video on single transistor composite video modification for 48K SpectrumsI made a video on the single transistor composite video mod, using an Issue two Spectrum although it applies to all issues. Much better than the sing…
... the Spectrum, so that 1 volt peak to peak is applied ... Spectrum is already at 1 volt peak to peak, there is ... composite output was at 1 volt peak to peak without the ... 75 ohm which is 62.9 ohm.
[url]ftp ... It's already at 1 volt peak to peak, as opposed ... -
Fixing my old ZX Spectrum 48K issue 4AHi Guys, I trying to fix my old Spectrum 48K. Looks like my dad used a wrong power supply as the ULA had a bit missing and so did the 7805. So I rep…
... 4 Pulses | Pulses | 0 Volt
pin 5 ... br />
pin 9 Pulses | Pulses | 0 Volt
pn ... 5 V DC | 5 Volt DC | slow Pulse
ZX Spectrum Clock Signal Restorer Circuit[SIZE=5][U][B]ZX Spectrum Clock Signal Restorer Circuit[/B][/U][/SIZE] The circuit below is an experimental circuit. It has only been "tested" using…
... through R4 is therefore 1.9 V/0.150 kOhm = 12 ... /2.2 kOhm = 5.7 Volt which is more than the ...Fixing my old ZX Spectrum 48K issue 4AHi Guys, I trying to fix my old Spectrum 48K. Looks like my dad used a wrong power supply as the ULA had a bit missing and so did the 7805. So I rep…
... .3 Volts.
0 Volt on PIN 14 and 5V ... on PIN 9
For some reason ... should of course be -5 Volt not 12 V.Fixing my old ZX Spectrum 48K issue 4AHi Guys, I trying to fix my old Spectrum 48K. Looks like my dad used a wrong power supply as the ULA had a bit missing and so did the 7805. So I rep…
... ]
using the "new" 9.45Volt supply the current to ... is 12.33V , the 5 Volt rail is 5.00V same ...ZX Spectrum 48K AV IssueOK so I dugout my old 48K Speccy today and decided to AV mod it. I did the mod (pretty easy) but the picture I am getting is this. [url=http://posti…
ok here goes
Pin - Pin - Volt
1 - 16 - 0.64
8 - 16 - 2.87
9 - 16 - 8.67ZX Spectrum 48K AV IssueOK so I dugout my old 48K Speccy today and decided to AV mod it. I did the mod (pretty easy) but the picture I am getting is this. [url=http://posti…
ok
Pin - Pin - Volt
1 - 16 / 0.20
8 - 16 / 2.20
9 - 16 / 4.90
On screen
[url=http://postimg.org/image/phfcendb1/][img]http://s14.postimg.org/phfcendb1/IMG_1031.jpg[/img][/url]RGB video issue on +2 and +3. Signal high?I have a couple of +3's and a new +2a that arrived today. When I plugged in the +2a using my RGB lead from Retro Computer Shack I was reminded of a n…
... 8. This should be between 9.5 and 12 volts to ... we get almost exactly 1 volt, with a current a little ...Hacking a +2 into a shorter caseIf anyone's got a copy of the notes or text they posted about re-wiring the +2 joystick ports or hooking up a tape recorder to the motherboard casset…
... is it possible to wire Ear / Mic sockets from the ... for those.
EAR/MIC sockets are tricky, not ... datacorder) should go to the ear. Use the absolute minimum ... deck?
May 9, 2015 13:55:51 GMT ... it.
May 9, 2015 18:41:10 GMT ...Issue 3 /3b power rail improvements<!--[if gte mso 9]><xml> <o:OfficeDocumentSettings> <o:AllowPNG/> </o:OfficeDocumentSettings> </xml><![endif]--> <p class="MsoNormal">Hi F…
... convertor for +12 and -5 Volt.
The 48K Service Manual ...+2A to PC/AndroidIt's been so long now I forget, but do the +3 cassette leads work for the +2A with regard to hooking the Speccy up to a PC or an Android device? If …
... Spec-chum;851497"]due to ear guard protection. People were listening ... runs from a 3.3 volt supply then you're really ... it's a 1.8 volt supply then you don't ...ZX-Uno moddingStarting with ZX-Uno case modding I have not yet received my ZX-Uno yet (it is in the post) but I know that I will have to do at least one mod …
... HD15 (has 15 pins instead 9). There are only 3 display ... PC/tablet/phone throw the EAR port.
Really ZX ...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 …
... in the BIOS, so the EAR updates can also be made ... corner.
[quote]
9) The : (colon) key seems to ...What should your speccy have come with ?:) I was thinking about this earlier. What changes should of been made to the Speccy when you purchased yours ? Realistically this topic really…
... slot
- DE-9 RS-232 interface located at ...
- Rear mic/ear combined audio jack and higher ... +
- Industry standard 9-pin and 25-pin Serial ... networking
- Rear mic/ear combined audio jack for backwards ...Getting a +3 working again (keyboard & tape socket issues)So, as part of my Spectrum restoration project I will also try to tackle the problem child among my fleet, the +3. PROBLEM ONE: Ever since I firs…
... got one voice in one ear saying "come on, it's ... another voice in my other ear saying "you with your clumsy ... connectors (keyboard "KBY3", joystick pin 9,) and the pin of the ... 40077, I can see pin 9 on both joysticks, and I ...Spectrum Cables : How many individual types of these are there "out there" both past and now?So this is all about giving the SPECTRUM cables their correct cable titles to aid IDENTIFICATION OF CABLE TYPE and FUNCTION across the world.. An e…
... Save/Mic or a Load?Ear? And does it matter!!)
9) A very long (say 6 ... ) A DIY joystick extender lead : 9 pin sub D connector on ...Games overrated by MagazinesI know this is a little ambigious (LMLWD) as your worst game could be someone else's best, but sometimes didn't a games review seem a little overboar…
... . With a clip round the ear, he was sent to bed ... /10
Graphics: 9/10
Value: 9/10
Playability: 8 ...Are there any TWIN COMPUTER games or any other twinned software for the ZX Spectrum?I noticed in the PSS Game "Tobruk" that there was an option for the use of 2 Amstrad Micros . The instructions say :- "This advanced version of Tobru…
... comms via the tape's EAR/MIC.
I looked ... COM (keyboard row 9) (open-collector)
9 COM2 (keyboard row 6 ...CD Audio games loadingIs it possible to save a spectrum game (from original tape or archive file) as an audio track on CD and load it from a CD player to a Spectrum using …
Is it possible to save a spectrum game (from original tape or archive file) as an audio track on CD and load it from a CD player to a Spectrum using the EAR/MIC connection?
Thanks
RichardTeenage Mutant Hero TurtlesI loaded this game up on my Speccy using a TZX file. Unfortunately, because of the hype at the time, they had one of those piracy blocker things: it …
... the number on the grid 9 down, 6 left?" or something ...Interface for PC ZXSee last entry of former TOPIC. I'm working on the interface. Info about it on MISCELLANEOUS Author: Arjun (---.bng.vsnl.net.in) Date: 08-13-01 …
... a help - handy if the ear socket in the Speccy goes ...what made u buy a spectrum?Yo spec-chums what really made you buy a spectrum?. Here is my story i was about 9 and had a oric1, poor me eh?, yes it had 48k but it was just about…
... my story i was about 9 and had a oric1, poor ...
