-
ZX spectrum as a PC usb keyboard?One of my commodore brained friend showed me an interface which converts the keyboard of c64 to a standard usb keyboard. I quickly searched this for…
... what about connecting ZX ULA chip on AGP port to getting 'real ... -
Wanted: z80 asm routines...for the Sam. This call goes out to Colin and others who know how it should be done. If you look on the Sam C disk you can see the implementation…
... unsigned inp( unsigned port )
Read the CPU 'port' and return the ... value read.
... void outp( unsigned port, char data ... the 'data' to the CPU 'port',
[/QUOTE]
From a book about commodore.."In April 1982, Sinclair released an improved computer called the ZX Spectrum. Compared to the C64, the Spectrum had few technical advantages. It ha…
... /> ooo, I disagree here. I read somewhere (maybe even an excerpt ... as well, called the ULA. The ULA is a sea-of-gates ... with a colour framebuffer. The ULA integrates some stuff that could ...Spectrum Issue two problemI managed to bring back to life a issue two spectrum (at least the power supply cirquit). The screen is now crystal clear (after replacing all the el…
... , CPU, and most of the ULA [I]should[/I] check.
I read somewhere on the forum that ...Amstrad takeoverHello guys, Let me introduce myself - I'm the owner (well, if you can call it that?) of [url=http://www.cpcwiki.com]CPCWiki.com[/url], and obviously…
... 's still a very interesting read. A shame it ends where ... wavered their rights to the ULA but as John Grant explains ...Any interest in new low-cost mass-storage interface with 512K RAM?I've recently added support to ResiDOS and the +3e ROMs for SD/MMC card interfaces; in particular, ZXMMC (which has no onboard RAM and so is only sup…
... I'd be pleased to port ResiDOS to it. Note that ... . I suppose I really should read Yarek's description properly :lol ...2007, and still no NIC and browser for the Speccy?I've started to read all the w.o.s. threads, starting by the ones that came up with the search function, using the keywords of the topics that intere…
... VALUE dialog?
VARIABLE port
CREATE c/type ... DUP R@ + 4095 R@ - ihdl READ-FILE DROP
?DUP IF ... /STRING >NUMBER 2DROP DROP port ! ;
: host>ip ... OR 0= 6 herr
port @ 0 tcp sock_open DUP 0 ...Stupid ponderingsI just got a XM1541 cable for my C64 hard drive to allow me to write d64 images directly to c64 disks. Works great and I love it. Anyway, its got m…
... on the interface 1 to read/write to microdrives or maybe ... a PC via the RS232 port, I've done that with ...I/O contention model questionHi everyone, Sorry for my poor english. Together with a friend we are working on ZX Spectrum 48k implemented in FPGA. We have found bug in the Spect…
... )
During _reading_ from ULA this can't be right ... peripherals.
During a read, i/o peripherals put data ... 't make sense that the ULA causes contention for non-existent ... ULA ports in the $4000-$57fff ...Stupid ponderingsI just got a XM1541 cable for my C64 hard drive to allow me to write d64 images directly to c64 disks. Works great and I love it. Anyway, its got m…
... the pc to the rs232 port on the speccy/int 1 ... the pc that would write/read to the microdrive. Or the ...I/O contention model questionHi everyone, Sorry for my poor english. Together with a friend we are working on ZX Spectrum 48k implemented in FPGA. We have found bug in the Spect…
Hi,
Spectrum Ula watch the state of A14 & ... or memory operation, the ula starts to read video ram at cycle ...I/O contention model questionHi everyone, Sorry for my poor english. Together with a friend we are working on ZX Spectrum 48k implemented in FPGA. We have found bug in the Spect…
... cycle, but ULA doesn't want to read memory. ULA puts on the ... are at TW cycle. ULA is about to read from memory. It ...I/O contention model questionHi everyone, Sorry for my poor english. Together with a friend we are working on ZX Spectrum 48k implemented in FPGA. We have found bug in the Spect…
... the cpu is acting a read/write operation on video ... stopped by the ula. This happens because the ula and the ... are at TW cycle. ULA is about to read from memory. It ... cycle or later then the ula must stop the cpu ... , it need the bus to read vram :)
...Opus Discovery and +2A?Can anyone tell me if the Opus Discovery is compatible with the +2A. I've just bought a +2A off Ebay and couldn't find any info on compatability. If…
... ] - one of which being the ULA which is selected when A0 ... the ULA doesn't get selected), but from what I've read ...USB Hardrive enclosures.I have invested in a USB hardrive enclosure and a 40Gb laptop hard-drive as my USB stick was bulging at the seems. Now these devices power and run t…
... the drive from the USB port assuming the write has completed ... days. From what I have read about such things both XP ...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 ... - if not, chances are the ULA has gone to silicon heaven ... .....
Mr K, have read your PM, will get back ...Spectrum +3 Problem & A Modification IdeaThis is a dual post. And it's also my first post, so I apologise if I get stuff wrong lol. My mate bought a Spectrum +3. I'm unsure about how many d…
... could be dead machine, dead ULA, dead RAM. If you have ... can connect to the RGB port that might rule out a ... modulator. If it's the ULA you're in trouble, otherwise ... explain to me what a ULA is?
Well to ...Audio input on a +2would it be possible to connect an external tape recorder to the socket at the back,or would something bad happen?
... attenuate any transients. The ULA pin 28 labeled 'MIC/ ... for the EAR port comes off the same ULA pin, except ... load stuff through the wrong port - the difference between the ... filter - on the MIC port, it lacks the resistor to ... and on the EAR port you've got an R ...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 …
... Jetpac.[/QUOTE]
Nope, but read on...
[QUOTE ... is what gets written to port 32765 after you return to ...Zx Spectrum Laptop (again)I've been reading all the old treads about a possible portable speccy. I even found the one about the Speccy Laptop. But it seems there's a lot of ne…
... I/O pins for a ULA replacement - IIRC, all but four ... , especially since the Spectrum ULA's port decoding merely consisted of checking ...Zx Spectrum Laptop (again)I've been reading all the old treads about a possible portable speccy. I even found the one about the Speccy Laptop. But it seems there's a lot of ne…
... active gates were in the ULA? I coudn't imagine a ... 1982 technology ULA had _that_ many.
read the memory when the Z80 ...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…
... DMA chip know when ULA acesses lower 16K ?[/QUOTE ... access to contended memory, ULA stopped clock for CPU.
ula generate WAIT for CPU. ... any ULA model. You
can change speed for read (source ... Max. speed is 2T for read byte and 2T
...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…
... access to contended memory, ULA stopped clock for CPU.< ... any ULA model. You
can change speed for read (source ... Max. speed is 2T for read byte and 2T
... with contended memory. DMA read and write to videoram ( ... byte = 4T (2T for read byte + 2T for write ...Currah MicroSource emulationIt appears to be impossible to emualte the MicroSource in software on the ZX Spectrum SE as hardware polling is required. The following patch is not …
... and -RD.
Memory read access, OTOH, asserts -MREQ and ... know what signals the little ULA in the uSource is connected ... , and when the address is *read* it would clock a toggling ...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…
... (or in the case the ULA turns out to be borked ... just needs to consist of port decoding (really, in the case ... a PC via the parallel port. Or even just an octal ...Dual Kempston joystick?Hi. I've seen pictures of Kemspton joystick interfaces that have more than one port, ever 3. Are these intended for mutiplayer games or what? Is ther…
Kempston Joystick is read using IN 31.
... Kempston Joystick interfaces exist, what Port would the 2nd (or subsequent ...Adding AY music to your plogramI'd like to add some nice tune to my program written in machine code. I am not new to assembler programming but with music programming I have no expe…
... to set by writing to port 65533, then send the new ... value to port 49149. For some peculiar reason ... mechanism is also used to read the light gun too - the ...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…
... someone took the time to port Fuse, not SimCoupe, to something ... ;178052]There have been two port of Fuse to win32. One ... that, (I think) I can read C as I usually get ...Dead +2B, help required...It was bought defective on ebay. It came with two faults: a "dead" power supply (it was the fuse) and a faulty main unit. The power supply is now re…
... a datalatch for the printer port. II've blown a few ... fails, I would say the ULA has gone to silicon heaven.Regarding the interface with USB port[url]http://www.octocom.es/reuniones/art_madridsx07_11.html[/url] [url]http://velesoft.speccy.cz/kmouse/km-doc/kempston_mouse_turbo_interface/km-t_2…
... the Z80, the I/O port decoding would see IORQ go ... , used NMI or polling to read the USB chip. I think ...
