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New multi-interface for ZXI have in development new interface for ZX Spectrum. PCB size is similar as K-MOUSE interface and on board is CPLD (programmable logic), up to 1MB st…
... the low byte instead of FE. That does clash with the ... the mod on the through-port of the RAM turbo, such ... -
Quick fix for four joysticksHere's a quick modification to add four joysticks to any Speccy. This assumes you already have two Sinclair ports. [URL="http://joefish.co.uk/specc…
I've been using whatever port address lists I can find - [ ... the low byte instead of #FE) but A4=low is treading ... Kempston simultaneously out of one port. I thought it was just ... Interface II respond to IN #FE. I've done that successfully ... -
What would you do with four joysticks?Anyone got some inspiring ideas for four-player games, or twin-stick two-player games..? I can think of, for four players: [I]Warlords[/I] (Atari) […
... IN #EF instead of IN #FE - it's just there are ... on the Sinclair port and leave the Kempston port as-is, then ... but with either a second port or an IN-55 switch ... the address line to turn #FE into #EF, then not only ... -
Collision Detection in SP1Hi, Does anyone have a well-documented example of using collision detection in spritelib. I've search WoS and Z88DK forums but no joy. Something wi…
... /reference/48kreference.htm#PortFE"]ULA Port 0xfe reference entry[/URL] I ... changed with an OUT to #FE where the written byte has ... -
Beepola v1.08 AvailableA new version of Beepoa, v1.08, is now available for download from:- [url]http://freestuff.grok.co.uk/beepola/[/url] (1.76MB zipped exe, no installe…
... other bits in the speaker port. I supposed this is confirmed ... the output above each OUT ($FE) if, and only if, you ... particular) to better cope with port contention on the standard speccy ... forgotten about the existence of port contention and suddenly had an ... -
Atic Atac on 128kThis may have been talked about before, especially if its not just me with this problem, but loading this on my grey +2 results in title screen, then…
...
938D DBFE IN A, (FE)
[/CODE]Looks like an ... , but a typo in the port number being written to at ... , not a typo, the same port is written to using a ... -
Please explain how a Kempston interface circuit works.Can someone help me understand how a Kempston joystick interface works, as I want to design and build my own as an experiment. I understand switches…
... circuit board from a two-port (Kempston & Sinclair) DK'Tronics ... IN #EF instead of IN #FE, which is one way to ... at least a dedicated Kempston port.
So, going forward ... -55 interface (Kempston-style on port IN 55). I could try ... -
4294967296 pseudo output portsIn an effort to avoid any hardware conflicts with the clashbasher interface I've been looking for an alternative to using the spectrum's ports for ou…
... />
Then the specific port ,within this set of 65536 ... wants to write byte $fe to port $1234abcd, I understand the ... label1:
; open specific port $abcd
ld ix ...
; open specific port $abcd
defb $dd
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…
... them to shift the Sinclair port to another row of the ... thought about going from IN #FE to IN #EF, but now ... fancy case. Still no through-port though.
I've ...Fuse 1.1.1 releasedOn behalf of the Fuse team, I am pleased to announce the 1.1.1 release of Fuse. The changes from the recent 1.1.0 are relatively minor, mostly correc…
... contended the same way as #FE is by ULA+. This means ... ULA+ either. This means every port would be contended the same ... those ULA+ implementations use different port decoding (full vs partial), then ...Spectrum screen layoutSeeing the thread on displacement I was wondering why the spectrum had the stupid screen split into three sections and the addresses for each section…
... out how to get your port of BBC Basic (Z80) to ... initial CLS attaches stream &FE to channel 'S', and from ... output goes to stream &FE and consequently to where-ever ... CLS calls reattaching stream &FE to channel "S".Features that are still wanted in Spectrum emulation.Features that are still wanted in Spectrum emulation. 4 USB joystick/gamepad input for real multiplayer games - Yes, Bomb Munchies.... - Sinclair 12…
... 'keyboard' with #EF instead of #FE in the low-byte (which ... really needs a dedicated 2-port interface.
K-55 ...Features that are still wanted in Spectrum emulation.Features that are still wanted in Spectrum emulation. 4 USB joystick/gamepad input for real multiplayer games - Yes, Bomb Munchies.... - Sinclair 12…
... /> [Citation needed] regarding the precise port decoding. Fuse’s Fuller emulation ... 'keyboard' with #EF instead of #FE in the low-byte (which ...Knight Lore disassemblyHi, Not quite sure if this belongs here or in "Games" but figured it's more likely that developers would be interested. I've just released the …
... address
RAM:B5F9 DB FE in a, (0xFE) ; read status ... A8-A15 address lines for port 254 reading (A register contents ...New game: Metal Man Remixed + book "ZX Spectrum: a visual compendium" by Sam Dyer<div>Metal Man Remixed It's the considerable improved version of Metal Man Reloaded.<br>The game was made especially for Bitmap Books.<br>T…
... /> ZX Spectrum machines with contended #FE port
- slightly reworked GUI ...c64 .sid player coming soon to specy 128!!!c64 .sid player coming soon to specy 128!!! the first old version uses only square waves, 4 years ago: https://www.youtube.com/watch?v=6CKt9noxA7s…
... /> BE44 xor a
out (#fe),a
ld a,#10 ... /faq/reference/128kreference.htm
Port 0x1ffd responds as follows:
Bit 4: Printer port strobe.SD Card Interfaces for the ZX Spectrum : the complete list OK I admit it : this thread will start life as the incomplete list of SD card interfaces but the aim is to list the lot
... />
================================================================================
PORT ADDRESS DECODING
hex/dec ... Key -
#FE/254 xxxxxxxx11111110 xxxxxxxxxxxxxxx0?Key ...Need help from people with a +2A/+3Started a topic [url="https://www.worldofspectrum.org/forums/discussion/55141/need-help-from-people-with-a-2a-3"]here[/url] to get a broader reach, b…
... below
ld bc,CST.Port
ei
... initial value of the fb port
.LOC_Opcode
... in a,(c) ;read the port again
exx
... (HL)
DEFB #CB,#FE ;SET 7,(HL)
DEFB ... the values read from the port before (I) and after ...Thought this would be simple... Z80Hi Folks, Started to read "Beyond simple BASIC, Delving Deeper into your ZX Spectrum" by Dilwyn Jones. This is a great book and I came across the…
... keyboard
key_w in a,($fe) ;read port 254
cpl ;invert ...A Neat Redefine Keys RoutinePreviously, I’ve only shared this routine with a couple of people via PM, but I’ve now decided to make it public. I optimized it for size, so it uses…
... ;leaving
;Inject port addr & mask for controls ... ,254 ;high byte of port to read (%11111110) ( ... be modified)
in a,($fe)
and 16 ;mask ... a,$ef
in a,($fe)
and 4
in a,($fe)
and 16
Machine Code input / assemblers [naive questions alert]Excuse me for the naive questions...in advance :) When I was a kid, I was struggling to understand how to input machine code into Spectrum. There…
...
out ($FE), a ; Set the border red, $FE = ULA port
ret ...Making sound using the BEEPER in AssemblyI had a look at the the documentation but it doesn't make sense to me. To make music just the beeper all I have to do is send ones and zeros to one o…
... ’s an intricate pattern of port contention, which I can’t ... the high byte of the port address, because after the first ... a,$17
ld c,$fe
loop ld b ...Making sound using the BEEPER in AssemblyI had a look at the the documentation but it doesn't make sense to me. To make music just the beeper all I have to do is send ones and zeros to one o…
... use
[code] ld bc,$fe
out (c),a
[code]
out ($fe),a
[/code]
like ...
ld bc,#00FE ;BC: port
.loop
add hl ...
