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Dead 128K heatsinkUnfortunately my 128K heatsink died suddenly and with no apparent reason. I had the Kempston Pro interface connected and when i powered it on the ztx…
... myself never trust a stable reading, but cannot say that such ... was caused from the expansion port and not from a PSU ... -
Jetpac LoadingI have Jetpac on tape for my 48k and can't get it to load. Here's what I'm doing...Press L to get load screen then "jetpac" and Enter while pressing…
... winds up writing to a port that has no effect on ... a write to 0x7f before reading from 0xfe! Damn book had ... -
Create a new microdrive cartridge image formatHi there, I'm working to emulate the IF1+Microdrives in JSpeccy.I've found what the "classic" MDR format ins't capable to store all the required inf…
... code must "invent" while reading the preambles as they ... GAP signal for 0xef port is the GAP status ... MDR to MDV at reading time, another different matter ... is a simple conversion while reading and, when the cartridge ... the GAP bit in 0xef port). To save space, ... -
Definitive list of games incompatible with +2A/+3 and of compatible versions (if any)I am trying to compile the definitive list of games which are incompatible with the +2A and the +3 and of their compatible versions, if they are pres…
... models. HEIST game use reading of attribute port #FF and this feature ... -
A z88dk + sp1 demo (with source)Since nowadays people are still wondering about how difficult it is to make something in z88dk, I thought I just put a very simple demo to show how e…
... C coders who want to port their code to Z80, rather ... you can get by just reading the headers. Remember however that ... -
Would anyone be interested in......Hi, I'm wondering if there would be much interest in an expansion card for the speccy that gives a VGA output with enhanced gfx & sound capabilities…
... supporting existing standards - Covox on port FB, GeneralSound card (512Kb), TurboSound ... , full TR-DOS emulation (with reading/writting TRD/SCL files).
New interface for ZXThis is my old (2004) unfinished project of internal interface for ZX Spectrum 128+2: ([url]http://velesoft.speccy.cz/hardware_in_development.htm[/u…
... contention on all ports(only port #FE is slow) and memory ... with full support of FAT16 (reading/writing).
And games ...Ultimate Collected Works, no Underwulde, why?I managed to get my grubby paws on the "Ultimate Play The Game" "The Collected Works" off E-bay.... The set has 1. JetPac 2. Pssst 3. Tranz-AM 4. Co…
... to the port 0xFD always occurs in the keyboard reading routines, normally ...SpiffyBecause there aren't enough emulators already... [url=https://github.com/ec429/spiffy]Spiffy[/url] is my 48k Spectrum emulator, for Linux. Right no…
... 'd highly recommend reading Chris's book - My reading of it was ... state machines for mem & port read/write).
[quote ...Reading interface 2 using the IN commandHow do you read using the IN command from BASIC? You can read multiple keys at once, but I cant remember the values...
... use it for reading all the keys in Sinclair port 1. Remember ...Spectrum LaptopHas anyone here made or tried to make a laptop version of the Spectrum, like [URL="http://www.engadget.com/2008/03/20/zx-spectrum-laptop-mashes-in-a-…
... ?).
FUSEPSP is a port of FUSE, so has totally ... DS. Unfortunately Bookr (the ebook reading program for the PSP) only ...Music cassettesWas there ever a utility on the Spectrum which when you to play an audio cassette in the player enabled the loading border stripes 'move to the music…
... input just by reading the audio from the tape port. You could ...Detecting presence of AY?I'm working on my first little demo for the ZX Spectrum. At the moment I'm aiming to keep the memory requirements low enough that it runs on a standa…
... write to a port that is only designed for reading. For example ... respond to writes to that port.
Another idea ... 1s (eg $ff). Most partial port decoding schemes rely on detecting ... the Timex machines do use port $ff for internal bankswitching and ...New Game! Uwol '81 [ZX81][img]http://www.mojontwins.com/wp-content/uploads/2012/03/s1.png[/img] Yup, we have ported our most-ported game to date to the good ol' ZX81! Using …
... RAM, not only SD-card reading/saving, not only AY-sound ... also it has a joystick port. Most (all?) of the newest ...New Game! Uwol '81 [ZX81][img]http://www.mojontwins.com/wp-content/uploads/2012/03/s1.png[/img] Yup, we have ported our most-ported game to date to the good ol' ZX81! Using …
... RAM, not only SD-card reading/saving, not only AY-sound ... also it has a joystick port. Most (all?) of the newest ...I/O port adress map of Spectrum and interfacesI'm looking for an adress map of all the used and unused I/O ports for the ZX-Spectrum. Many years ago I designed an I/O board for the Spectrum that…
... use a single I/O port. The technique is put to ... 16 bits to the device. Reading is just the same but ...Z80 emulation C source with a permissive license?Could anyone recommend a good (all opcodes, proper timings) Z80 emulation code in C with a simple permissive non-viral license? Something without a w…
... on Linux. honestly try actually reading the license for once.[/quote ... [/url]:
"If I port my program to GNU/Linux ...Brazilian TK90X and TK95SpecEmu provides explicit support for Brazilian TK90X. Other emulators provide indirect support (perhaps the "Spectrum 48K NTSC" option in Fuse?). Al…
Reading from port $FE produces different results in ... :
[LIST]
[*]Input port $FE bit 7: always value ... and ZX-Spectrum.
[*]Input port $FE bit 6: default value ... TK90X and TK95.
[*]Input port $FE bit 5: usually 1 ...Outrun Europa - In colourAre there any coder's willing to see if we can put the colour into this game as originally intended?
... :[/QUOTE]
I was reading an article about disappointing 8 ... 'd prefer a re-jigged port of the untouchable original Outrun ...Brazilian TK90X and TK95SpecEmu provides explicit support for Brazilian TK90X. Other emulators provide indirect support (perhaps the "Spectrum 48K NTSC" option in Fuse?). Al…
... remember it was something about port 254. :)
@Andrew: When ... do you mean? I remember reading that all Brasilian Sinclair clones ...Brazilian TK90X and TK95SpecEmu provides explicit support for Brazilian TK90X. Other emulators provide indirect support (perhaps the "Spectrum 48K NTSC" option in Fuse?). Al…
... remember it was something about port 254. :)[/quote]
port decoding of course, because ... ULA is only on port #xxFE, not on ... every even port.
[quote]@ ... you mean? I remember reading that all Brasilian Sinclair ...Brazilian TK90X and TK95SpecEmu provides explicit support for Brazilian TK90X. Other emulators provide indirect support (perhaps the "Spectrum 48K NTSC" option in Fuse?). Al…
... 7 from input port $FE. When TK90X is reading screen attributes, the ...Divide CF cardsI have recently got a Divide but I'am waiting for my Compact Flash card to come form Amazon. However, the Divide states that the CF card needs to be …
... original?
I was reading a wiki recently which detailed ... standardisation with regards to IO port numbers but I'll be ...Divide CF cardsI have recently got a Divide but I'am waiting for my Compact Flash card to come form Amazon. However, the Divide states that the CF card needs to be …
... .
[quote]I was reading a wiki recently which detailed ... standardisation with regards to IO port numbers ... [URL="http://www.zxshed ...AY-interface for ZX81 (at last ;) )Hi, it exists finally ;) - compatible with the most standard one - ZonX. [url]http://www.sellmyretro.com/offer/details/Brand_New_Sinclair_ZX81_MrX_A…
... . I recall reading that someone else had done a ZX81 port, but ...Fusetest port 0x7FFD test resultsHi, I'm adding the Spectrum 128K emulation to my FPGA core running on the V6Z80p platform. I'm doing some tests; running Fusetest, the machine is se…
... value is copied to the port register.
I wonder ... the other side the 0x3ffd reading test passes.Fusetest port 0x7FFD test resultsHi, I'm adding the Spectrum 128K emulation to my FPGA core running on the V6Z80p platform. I'm doing some tests; running Fusetest, the machine is se…
... ,3,4 during the whole port write/read, and I update ... at the end of the port access.
Doing this ... , I added code to update port 7FFD on RD IORQ. And ... test for ports 7ffd and 3ffd was passed OK...
I ...Fusetest port 0x7FFD test resultsHi, I'm adding the Spectrum 128K emulation to my FPGA core running on the V6Z80p platform. I'm doing some tests; running Fusetest, the machine is se…
... , I added code to update port 7FFD on RD IORQ. And ... test for ports 7ffd and 3ffd was passed OK...
I ...Machine Code Routine of the weekHow about a thread that has a routine each week that is in [B]assembly language[/B] and is also described in great detail what the hell is going on …
... "table lookup" routine, used when reading an user's ASCII input ... indicates the top byte of port $fe and mask to IN ...Low level microdrive programmingSo I'm on my lunch break trying to find out about low level microdrive programming (without using IF1 ROM). I see one can use port 0xe7 to read and w…
... erase bit or (pure speculation) reading a new non-formatted cartridge ... br /> a) start the motor (port 0xef)
b) set the ... r/w bit (port 0xef)
c) write ... to port 0xe7
d) stop ...
c) read from port e7 (byte-by-byte)
