... ;722165]because the hardware spi port of divmmc (and zxmmc of ... interfaces back in the day), he wanted the SPI output port to ... have the byte just read in a previous ... operation to a uncontended port uses 4 cycles (in any Spectrum model ...

... interfaces back in the day), he wanted the SPI output port to ... have the byte just read in a previous ... operation to a uncontended port uses 4 cycles (in any Spectrum model ... and simply have your SPI port to work so that the ...

... /> IN A,(+FE) Make an initial read of port '254 ... /> RET NC returning in between if there
Read from port +7FFE.
IN A,(+FE) ...

... bad kempston joy routine. If I replace IN A,(C) and IN A ... ,(1F) instructions (in kemp. ... /> SAM COUPE not use kempston joy port, then in games is better add ... manual selection on autodetection (HALT, IN ...

... manufactured Kempston compatible joystick interface anyone ever bought in the ... Kempston themselves and it doesn't care if you use IN 31 or IN ... 223. It even responds to IN 0 and IN ... same time as any normal Kempston joystick interface (with good ...

... . There is also a Kempston joystick port built-in. Unfortunately the ROM is ... soldered in, but I like this ...

... to use a tokenizing ROM in place of the original, then ... 32x custom ZX rom. In allram mode run also system ... impossible connect original old kempston joystisk interface, because kempston port is bad decoded ... PLUS but incorrect decoder in KEMPSTON interface.

... QUOTE=ewgf;744781]I've read the book (well, the ... made by professional people in almost laboratory like conditons ... interviews with programmers I've read in the past, but this ... that didn't fit in with the image of ... rampage was another class port to the speccy. I ...

... ? I've always seen IN 31 return 0, not 32, ... (lazy style, one IN 31 and one IN 55), one chip could ... br /> But anyway, I picked IN 55 as an alternative so ... and wouldn't trigger a Kempston interface (that was just ... A5). But any old Kempston interface, good or bad, ...

... ports (lazy style, one IN 31 and one IN 55), one chip could ... and wouldn't trigger a Kempston interface (that was just watching ... A5). But any old Kempston interface, good or bad, ... then respond to IN 55.[/QUOTE]Yes. All Kempston interfaces should not ...

... circuit board from a two-port (Kempston & Sinclair) DK'Tronics ... want at least a dedicated Kempston port.

So, going ... a K-55 interface (Kempston-style on port IN 55). I could ... circuits from two separate Kempston interfaces crammed into one ...

... line with an IN 31, and another with an IN 55. So one ... bit higher than the normal Kempston one. Then Amstrad/MSX/SEGA ... to a second fire button in your code. At the moment ... -55 interface with an old Kempston one and a bit of ...

... (B,C) will work as kempston with two fire buttons.
port 31 compatible with kempston + port 95 for joypad communication ... (B,C) will work as kempston with two fire buttons. But ...

... doing 4 joysticks. Sinclair+Sinclair+Kempston+Fuller is the only official ... can think of, but cheap Kempston and Sinclair interfaces are easily ... .g. IN 63 instead of IN 31, and IN 0xEFEF instead of IN 0xEFFE.

... INT duration then? If I read the thread right, Lion17 himself ... ]You should read that FAQ a bit more carefully. Port #FF was ... of that information. The port #FF (in sense of attribute access, not ...

... INT duration then? If I read the thread right, Lion17 ... WoS on few remaining inaccuracies in the Pentagon emulation (nothing ... of that information. The port #FF (in sense of attribute access, ... much time in my childhood reading about the mysterious port #FF ...

... detect the instruction and the read and write to the same ... the byte that is fixed in ROM for n rather than ... one you tried to poke in earlier.[/QUOTE]

Oh ... some fixed sequence to a port, as in a program selecting a ...

Got myself one of these a few days ago, great product, I love the fact that there is a built in Kempston port, something my old DivIDE 2k11 did not have (although on the site he states that he is working on a 2k13/4 that will have a built in port).

... you would just do normal kempston style IN 31 commands.

...

The first IN 31 executed would receive the data ... 000
the next IN 31 executed would receive the data ... only 3 attached in this example the next IN 31 would receive ...

... 7-bit column. To read/write memory, you select ... ] DRAM chips, which are read in parallel — bit 0 comes ... />
The burst mode read that is performed must be ... would be required in the ULA, in which space was ... , 27, 7, 21, 15, 31 by mirroring the address bits ...

... ) support are highly desirable in an external video card. ... suggest a separate OUT port is used to ... 48K Spectrum. This port may duplicate the control ... device has a Kempston joystick port built-in, a second device ... change its joystick port to respond to IN 55! :D ...

... connector and requires no changes in the circuitry of your computer ... occurred when reading from the port #7FFD in computers ZX Spectrum 128 ... allows you to read the status of the port #7FFD. Jumper JP1 ...

... works. There was an error in the FAQ which I've ... /> [quote]0xFF3B is the data port (read/write) When the palette group ...

... switch joystick mode between KEMPSTON (port 31) or FULLER (port 127) mode.

... enable easy connection two kempston joysticks on ports 31 and 95 decode ... made) uses a joystick on port 95?

... switch joystick mode between KEMPSTON (port 31) or FULLER (port 127) mode.

... being read-in for the movement should always stay this way (for KEMPSTON ...

... bus related.

In various Kempston (and compatible) joystick interfaces, various ... a Kempston (or compatible) joystick interface is not present, reading IN 31 dec ...

... do the different graphic modes in the Spud sprite viewer work ... order the bytes were being read in each mode.[/QUOTE]
One ... byte 13 byte 19 byte 31
byte 8 byte 14 ...