-
Tricks with IN 31It's generally considered unwise to use a Kempston joystick's fire button to start a game, because the floating bus effect can make arbitrary data ap…
... considered unwise to use a Kempston joystick's fire button ... on IN 31 from the screen RAM.
If the Kempston ... interface is disconnected, and I read IN 31 while the ULA ... interface is connected, and I read IN 31, can I be sure that ... -
Detecting a Kempton joystick...I've been playing with the idea in the games I'm currently developing so that once the Kempston joystick has been selected you can hold FIRE down to …
... +2 without a Kempston attached and IN 31 constantly returns values ... Kempston is connected with a few thousand iterations where you continually read port 31 ... you should disable your Kempston check. If these bits ... a fair chance the Kempston is connected and you ... -
Tricks with IN 31It's generally considered unwise to use a Kempston joystick's fire button to start a game, because the floating bus effect can make arbitrary data ap…
... ]If the Kempston interface is disconnected, and I read IN 31 while the ... is connected, and I read IN 31, can I be sure ... is connect joystick. On port 31 can be connect also real ... autodetection of joy port is possible:
- read port 31 after HALT instruction ... -
DivIDE and joystick interfaceWhich joystick interface works with the DivIDE and ZX 48K? I have TurboRAM but it works not correct or blocks DivIDE. Multiface One works with the j…
... . Adress of kempston port is 31 : BIN 00011111 (A7-A0). Kempston joystick port decoders accept ... not used then kempston interface after IN 31 or OUT 31 send to data ... on zx bus ! Read and write to joy port is same !!! And ... -
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…
... "extended" kempston interface that fully decodes the port instead of ... Or, presumably, nobble a Kempston joystick interface and change ... address lines. So if IN 31 is A7,A6,A5 ... A4 go low, so IN 47? That would also ... high bits on a Kempston port read to pick 1 of ... -
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…
... my +2A I can read the Kempston joystick port on IN 31 (Kempston) and the diverted ... Sinclair one on IN 61423 ($EFEF ... ) instead of IN ... -
Chuckie Egg and joypads on the SpectrumAn old favourite of mine is "Chuckie Egg", but it has no joystick option. I've got a dual port DK Troniks interface, the first port takes IN 31(Kemps…
... a dual port DK Troniks interface, the first port takes IN 31(Kempston) and the ... 9. What is the point in that? Does anyone know how ... -
DK-Tronics Joystick Interface, notes for databaseOn this page: [url]http://www.worldofspectrum.org/infoseekid.cgi?id=1000120[/url] There is a note marked 'Blurb': "The first port simulates 6,7,8,9 …
... 0 keys. The second port simulates IN(31) command" - Kempston.
And ... comments':
"separate programmable/dual-port types"
... left port implements the Kempston ( IN (31) ) protocol. The right port implements the Sinclair Port ... -
New Compo IdeaI've had this idea and would like to know what do you think about it. I think that most of us here know how to code in BASIC. The problem with Specc…
... 1) Reading the joystick (Kempston for instance) in BASIC routines?
< ... ) Pokes to get cool stripes in Borders.
3 ... the kempston joystick from BASIC is very easy. You just read "IN 31" ... IS compiler, (and sometimes in BASIC) you can get some ... -
Detecting a Kempton joystick...I've been playing with the idea in the games I'm currently developing so that once the Kempston joystick has been selected you can hold FIRE down to …
... ]
XOR A
LD (KEMPSTON),A ; Set joystick not present ... BC,&001F ; Check for kempston joystick
DI ; But INTs ... /> XOR A
L889A: IN E,(C) ; Read IN 31
OR E
LD (KEMPSTON),A ; Set joystick flag
Detecting a Kempton joystick...I've been playing with the idea in the games I'm currently developing so that once the Kempston joystick has been selected you can hold FIRE down to …
... ]
XOR A
LD (KEMPSTON),A ; Set joystick not present ... BC,&001F ; Check for kempston joystick
DI ; But INTs ... /> XOR A
L889A: IN E,(C) ; Read IN 31
OR E
LD (KEMPSTON),A ; Set joystick flag
Tricks with IN 31It's generally considered unwise to use a Kempston joystick's fire button to start a game, because the floating bus effect can make arbitrary data ap…
... 504: 87CB 32CE85 LD (KEMPSTON),A ; Kempston joystick not present
... amp;001F ; Check for kempston joystick
605: ... 607: 889A ED58 L889A: IN E,(C) ; Read IN 31
608: 889C ... 613: 88A5 32CE85 LD (KEMPSTON),A ; Set joystick flag< ...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…
... an interface like this using port 31?
If you ... expected with any game using kempston joystick (unless it does something ... want to be doing OUT 31 routinely in case one of these ... clones with a dodgily decoded Kempston port built-in.
A ...spectrum in united statesIs there any way to use a Spectrum in the United States? I notice all the ones I have seen on ebay have a power plug very different from the kind use…
Hmmmm. The only fully compatible American version of ZX was Timex Computer 2048. It is clone of ZX 48K, with power-switch and kempston port built-in. (And extended gfx-modes).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…
... . In other words you would just need an 8 port joystick ... game, and a regular kempston for everything else :D< ... clones with a dodgily decoded Kempston port built-in.[/QUOTE]
... forgot about things having built-in kempston ports.
[QUOTE ...ZX Dandanator! Mini - Cartridge system for SpectrumsHi All, I'd like to present a little HW I've developed during the last three months. It's aimed at providing a console-like usage experience for a…
... can also use a Kempston port, included in v2.0 of the board ...2 questions regarding partial port decoding1) What happens if the Spectrum reads from a port whose number matches the criteria for more than one device ? Does only one of the devices get to r…
... the Spectrum reads from a port whose number matches the ... troublesome command would be IN/OUT from port 0000h, as that ... triggering the Kempston joystick ? The standard "IN 31", corresponds to a port address ... ?
Shouldn't IN A,(15h) also access the ...Kempston joystickI don't have a joystick connected to my PC so I'm not able to get the values I need so can anyone help me out ? I read in this forum that I can read …
... out ? I read in this forum that I can read the Kempston joystick interface ... with this code:
[code]
ld bc,31 ...
in a,(c)
[/code]
in the up, down, left and ...IN for KempstonHi all A few years ago I wrote a Spectrum program that used graphics on screen to indicate what position a Joystick was in. I need the read IN instru…
... position a Joystick was in. I need the read IN instruction for Sinclair ... Joy 1 and Joy 2 and Kempston ... to know what is the IN for Kempston, and the Sinclair Joy ...SPIN's breakpoints - an overviewAs quite a few people have been asking how to set breakpoints on memory write etc. in SPIN, here's a description of the way the breakpoints work. Get…
... corresponding RADDR (Read ADDRess). You can break on port I/O instead ... all, like the Kempston joystick interface, accessed via IN 31. The most common ... lower 8 bits of the read port number (RPORT) and breaks if ...Kempston detectionI could use some help. This Kempston joystick behaviour drives me mad. I've written a game called Necrospermia recently ([url]http://www.worldofspec…
... people report that in their emulators and configurations Kempston is somehow automatically ... - if you scan Kempston port but there isn't Kempston attached, some weird ...
LD BC,31 ;kempston joystick fire?
IN A,(C)
BIT ...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…
... re-map itself to skim-read from an alternative address, so ... A 2-port joystick interface[/B] that supports IN-31 and IN-55, for ... br />
Again, a through-port is essential.
< ... adapting a few old RAM Kempston-compatible joystick interfaces to K ...SEGA GENESIS joypad from Ebay[IMG]http://velesoft.speccy.cz/zx/joypad/IMGP9641.JPG[/IMG] On Ebay is possible buy very cheap chinesse joypad compatible with Sega Genesis / Sega M…
... br />
After read port #1F return kempston joystick interface this data ... IN 31 = 0,0,button C,button B,up,down,left,right (kempston ... />
Each reading from port 31 set signal SELECT for joypad ... not use port 95 then joypad work on port 31 as standard ...+2A/Kempston interface incompatibility?Hello forum,<br><br>So, I used to be active here about eighteen months ago. I liked messing about with turboloaders. Then I disappeared b…
... Cheetah Mach 1 and this Kempston interface: http://www.retrogames ... 028282/Sinclair/Kempston-Joystick-Interface
Nada. PRINT IN 31 just ... it into the internal port despite knowing the pinouts ... with any models of Kempston interface and the +2A?Noob's guide to joysticksWhy on earth would I be asking this *now*, I hear you all scream? The answer... curiosity. Back in the day all I ever had was a +2 and Sinclair's …
... numbers 6-0 on port 1 and 1-5 ... on port 2. I also remember the port said " ... port 127". Does this mean a Fuller joystick is read by an IN ... 127 function much as a Kempston would be with IN 31 ... the Sinclair port on a +2)?
Knot in 3D ...Chuckie Egg and joypads on the SpectrumAn old favourite of mine is "Chuckie Egg", but it has no joystick option. I've got a dual port DK Troniks interface, the first port takes IN 31(Kemps…
... IN instruction on the appropriate port (e.g. 31 for Kempston) would read the port ... programs don't bother to read.
... have to read quite a few ports in order ... all on the same port, meaning that they ... keyboard detection with one IN instruction. Hence the ...What is a Kempston joystick?Just a quick question from an ignorant Commodore user (what, a Commodore user on this sacred ground? Relax, I'm a fan of all 8-bits, including the wo…
... KEMPSTON-interface your Spectrum will read the controls with
IN ... the keyboard (any even port, traditionally 254, 0x00fe) ... every even port.
The Kempston interface responded ... all. 31 (0x001f) was traditional.
Finally, port 1 ( ...Speccy machine code info where is it?Recently I've been trying to learn Z80 and I've managed to make limited progress (some of my routines even compile now!) but I seem to be having trou…
... 16-bit port read identifies which row you are interested in. The bottom ... to read a 16 bit port address is to put it in the ... )
CCCCC = horizontal column (0-31)
To print a ... joysticks and reading the AMX/Kempston mice. There's a lot ...New Compo IdeaI've had this idea and would like to know what do you think about it. I think that most of us here know how to code in BASIC. The problem with Specc…
... ), thus joysticks can be read with IN 61438 and IN 63486, respectively.
* Kempston Joystick can be read in port 31: IN 31 which give you a ... your UDG and you can read them in a SCREEN$. [Dr. BEEP ...Kempston mouse inverted axels?Hi I have a problem with my Kempston mouse :???: X and Y axels are inverted (and I'm using mouse right way!), ie. if I move mouse left, cursor moves…
... have a problem with my Kempston mouse :???:
X ... port yourself (say with:
10 print at 10,10; IN 31 ... I might have got the port number wrong).
< ... a few games read the Kempston Y-axis the ... play it with a Kempston joystick attached). Sorry I ...
