-
ZX Interface 1 ULAs FOUND !!Thanks to Ian Gledhill (of Mutant Caterpillar) we have now acquired a stock of replacement ZX Interface 1 ULAs. These are new old stock and have a d…
[QUOTE=Spirantho;734708]I would be interested ... -312 revisions.
I'd rather they took apart ... the bad microdrive I/O fault mine suffers from I reckon it ... the IF1 tick?
I actually wouldn't mind having ... chip.
I realise this is all a ... -
Which Emulator supports Betadisk48?Hi out there and happy new year, I'm looking for an emulator to run with my vision1.7 trdos-rom in 48 mode. Unfortunately most emus only support Bet…
... the bit about hiding the I/O ports). It may be useful ... inactive for operations of I / O interface is active while ... - If = 1 disables I / O interface and enables I / O expansion connector. If = ... FCh determines whether the disk I/O ports are visible (off by ... -
Using even ports for input?I've been looking for unused ports to use with my clashbasher interface. I understand that the spectrum only considers A0 when decoding its input p…
[QUOTE=Winston;746669](I think IORQGE isn't present ... all the address space of I/O ports occurred due to erroneous circuitry ... -
We could design the LokiWouldn't it be great... if this community would develop what Sinclair himself started but was never finished: a successor of the 128K with 'cartoon l…
... /> Not sure: I would like to have real I/O ports, and be able ... , VGA output, keyboard and mouse ports, etc.
Some CPLD with ... the firmware, etc.
I can imagine it would be ... -
We could design the LokiWouldn't it be great... if this community would develop what Sinclair himself started but was never finished: a successor of the 128K with 'cartoon l…
... ;758457]Not sure: I would like to have real I/O ports, and be ... , VGA output, keyboard and mouse ports, etc.
Some CPLD with ... the firmware, etc.
I can imagine it would be ... alltogether.[/QUOTE]
right I get what you mean now ... -
We could design the LokiWouldn't it be great... if this community would develop what Sinclair himself started but was never finished: a successor of the 128K with 'cartoon l…
... ]Not sure: I would like to have real I/O ports, and be ... VGA output, keyboard and mouse ports, etc.
Some CPLD ... Disk Controller, IDE Interface, 2xSerial ports, 1xParallel Port);
... 2x256 bytewide Serial Access Memory ports, together all 6 ICs ... -
Plea for new hardwareI'm posting this as a poll as I want to judge if I'm a solo loon going on about this, or if people really are interested in either of the following S…
... rhetorical question!
I don't know HOW or ... me at the time! I just know that they are ... inside that stops those I/O ports ever being exposed on ... connector. As far as I know it's common to ... then the two joystick ports built in to these machines ... -
DivMMC and K-Mouse Turbo incompatibilityToday I tested a setup someone wants to use, but of which he can't get the K-Mouse Turbo working. The setup contains of: - ZX Spectrum 128K (toastra…
... . But if CPU use any I/O ports, then K-MOUSE not use ... data only during reading mouse ports. (but without value FF on ... IM2 table)
As I mean - bad quality of M1 ... -
Joystick Interfaces on +2AJust found out that my DK'Tronics joystick interface doesn't want to play with my +2A (black). The Kempston port works OK, but not the Sinclair port…
... is another option. At least, I don't think this has ... of not using any more I/O ports.
Make use of ... swapping address lines.
[I][B]Mark[/B ... -
RS232 on Spectrum 128KDoes anyone actually use the RS232 port on the Spectrum 128K? Is there anything useful that can be done with it? I know about the keypad with the Sp…
... /Aux and RS232/MIDI ports as generic I/O ports supported via software. So ... code you could repurpose both ports for MIDI IN and OUT ... uses the AY I/O to provide two joystick ports. The UK2086 swapped ... to use both the joystick ports for MIDI in/out, or ... -
RS232 on Spectrum 128KDoes anyone actually use the RS232 port on the Spectrum 128K? Is there anything useful that can be done with it? I know about the keypad with the Sp…
... AY-3-8910 with two I/O ports. I'm not sure how they ... possible to use both joystick ports as bi-directional ... -
RS232 on Spectrum 128KDoes anyone actually use the RS232 port on the Spectrum 128K? Is there anything useful that can be done with it? I know about the keypad with the Sp…
... AY-3-8910 with two I/O ports. I'm not sure how they ... to use both joystick ports as bi-directional ports.[/QUOTE]
The ... Keypad/Aux and RS232/MIDI ports each have two input lines ... Keypad/Aux and RS232/MIDI ports can be used as serial ... -
RTC module for DIVIDE[IMG]http://velesoft.speccy.cz/other/rtc_module_v01_full_top.jpg[/IMG] [IMG]http://velesoft.speccy.cz/other/rtc_module_v01_full_bottom.jpg[/IMG] [IMG…
... two jumpers select address of I/O ports of RTC chip. Is possible ... ]
- are used two ports for communication with joypads
- aech reding of ports #000111xx reset signal "SELECT" on ...
- aech reding of ports #010111xx set signal "SELECT" on ... -
Guide to the ZX Spectrum ports[B][COLOR="Red"]New![/COLOR][/B] BC Info Guide #4 "Guide to the ZX Spectrum ports" [url]http://zx.clan.su/forum/11-46-1[/url]
Table not contain new ports of "RTC MODULE" for Divide interface.
[URL="http://velesoft.speccy.cz/zx/rtcmodule/index.htm"]http://velesoft.speccy.cz/zx/rtcmodule/index.htm[/URL]
I will release info about I/O ports soon.. -
+3e simple ide interfaceHi guys, I want to make a +3e with my +2a. I'm thinking of making the simple 8bit ide interface (internal) and connecting it to a 40 pin ide to sd r…
... Zetr0;811695]Again this I suspect is more software ... however no matter what I do they consistently crash ... or regular files. I suspect that a vector ... machine code is accessing I/O ports and ether not getting ... is writing to the ports used by the interface ... -
+3e simple ide interfaceHi guys, I want to make a +3e with my +2a. I'm thinking of making the simple 8bit ide interface (internal) and connecting it to a 40 pin ide to sd r…
... 's machine code is accessing I/O ports and ether not getting the ... , or is writing to the ports used by the interface ($1F ... -
Serial comms - duzzit work?Has anyone ever successfully got two 128K Speccies (of any variant) to communicate with each other over the SERIAL / RS232 / MIDI / AUX ports? I can'…
... four if you connected both I/O ports on each machine. It's ... -
IN and OUT in hardware terms... what are 'ports'?Hi all, I understand PEEK and POKE, but have never managed to get my head around IN and OUT. The books all go on about how they read from and wri…
... ).
Not so for I/O ports. For instance, the Speccy’s ... /> Similarly, the Speccy can use I/O ports to read the status of ... to avoid needing two separate I/O ports.
As some data ... only, and to economise on I/O ports, it’s common for the ... -
IN and OUT in hardware terms... what are 'ports'?Hi all, I understand PEEK and POKE, but have never managed to get my head around IN and OUT. The books all go on about how they read from and wri…
... between memory addresses and I/O port addresses. I/O ports just show up as ... argue that having the separate I/O port address space with ... because the space taken by I/O ports reduced the amount available for ... can be used to access I/O ports on the PCI card.
IN and OUT in hardware terms... what are 'ports'?Hi all, I understand PEEK and POKE, but have never managed to get my head around IN and OUT. The books all go on about how they read from and wri…
... between memory addresses and I/O port addresses. I/O ports just show up ... ’s known as “memory-mapped I/O”.
When ... that having the separate I/O port address space with ... distinguish between memory mapped ports and actual i/o ports you have to ...IN and OUT in hardware terms... what are 'ports'?Hi all, I understand PEEK and POKE, but have never managed to get my head around IN and OUT. The books all go on about how they read from and wri…
... distinguish between memory mapped ports and actual i/o ports you have to decode ... fully decode the 16-bit i/o address. Less decoding used ... /> Yep, although the Spectrum’s I/O contention makes it clear that ... such thing as a posted I/O access under PCI, though, ...Why were there no SN76489-based sound interfaces for the Speccy?I’ve been wondering for a while now why there were no SN76489-based sound interfaces for the Spectrum. Does anyone here have an explanation? There…
... stereo, the AY chips had i/o ports that could be used to ...How did bank switching work on the 128K Spectrums?I'm new to Z80 and ZX Spectrum. So I was wondering how the 128+ models managed to work with more than 64K of memory? I'm somewhat familiar with h…
... two I/O ports (* ask if you need to know more about Z80 I/O ports ... a bit complex, so instead I will describe a very simple ... has 64k bytes of RAM. I/O port 1 has a single ... and FFFF hex.
I hope that helps :D
Was there a POKE that broke the SpectrumHi Everyone I've been recalling myths and rumours from back in the day. You know "Lunar Jetmans" trailer and that sort of thing. But one rumour …
... of problems can occur with I/O ports when writing (OUTputting). And when ... />
So all really boring I'm afraid...
Now ... your Spectrum...
[b][i]Mark[/i][/b]ZX Spectrum Sprite chipHi everyone. As I said some time ago, I wanted to make a 'virtual' Sprite chip for the ZX spectrum, on my ZEsarUX emulator. The idea is to make so…
... hardware compatibility, it uses unused I/o ports on the spectrum. Anyway, you ... /
And compiling it... Yes, I know, it's not very ...ZX Spectrum Sprite chipHi everyone. As I said some time ago, I wanted to make a 'virtual' Sprite chip for the ZX spectrum, on my ZEsarUX emulator. The idea is to make so…
... hardware compatibility, it uses unused I/o ports on the spectrum. Anyway, you ... /> It's not about which ports you use, that's easy ...7mhz CPU?One of the things I like about Spectaculator, is that I can zap the clock speed of the emulated CPU up. Doing so makes me wonder about why the desig…
... ROM, the RAM, the ULA I/O ports (keyboard, border, tape in/out ... sound) and controls memory and I/O contention. And changes to the ... earlier issue machines.
I'm not saying it was ... the ULA...
[b][i]Mark[/i][/b]NTSC Compatibility?Correct me if I'm wrong, but wasn't the Timex 2068 the only NTSC clone built of the ZX Spectrum? And I use clone lightly... From what I underst…
NTSC Compatibility?Correct me if I'm wrong, but wasn't the Timex 2068 the only NTSC clone built of the ZX Spectrum? And I use clone lightly... From what I underst…
... lower RAM, or certain I/O ports (address bit A0 low ... ).
[b][i]Mark[/i][/b] [/quote]
... /> This is where I get confused. I understand why the ULA ... br />
Also, I get that it can't ... /> I swear I have the ULA book but I guess I need to ...
