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Multiplayer online Speccy gaming - an actual technical proposalAs is so often the way, [url=http://www.worldofspectrum.org/forums/showpost.php?p=274215&postcount=121]trying to put into words why something is impo…
... the revised value for the IN instruction, and then fast-forward the ... to be given the changed IN()s will most likely affect ... -
RZX Player interface - Possible?If I have a Mass Storage interface and some media (CF, SD) with a couple RZX files, what would I need to play them on a real Spectrum? If the RZX fil…
... that sequence of IN responses every time an IN instruction is executed. No ... next data byte from the IN list on the data bus ... while the rzx module supplied IN responses.
Hopefully the ... format, which would consist of IN data only. -
RZX Player interface - Possible?If I have a Mass Storage interface and some media (CF, SD) with a couple RZX files, what would I need to play them on a real Spectrum? If the RZX fil…
... be needed)
* Counts instruction fetches and tweaks the /INT ... needed to support RZX in an emulator, in fact :-)[/QUOTE]
... all that hard to do in hardware - instructions are straightforward ... on the bus when an IN instruction is decoded is quite easy ... -
Running TZX off an IDE drive? Or streaming from a NAS?Hello. I know about the DivIDE project, and about the ZX Ethernet project, but not how far they've come or what they can do. So: 1. If I have a squ…
... from the tape. Once the IN instruction ends, it would then ... when the Spectrum executes the IN instruction to listen to the ... Spectrum's bus when the IN instruction executes.
You ... to the CPU during the IN instruction.
Current hardware ... -
Running TZX off an IDE drive? Or streaming from a NAS?Hello. I know about the DivIDE project, and about the ZX Ethernet project, but not how far they've come or what they can do. So: 1. If I have a squ…
... to the CPU during the IN instruction.
[/QUOTE]
Not ... -
Running TZX off an IDE drive? Or streaming from a NAS?Hello. I know about the DivIDE project, and about the ZX Ethernet project, but not how far they've come or what they can do. So: 1. If I have a squ…
... expecting the 1s and 0s in a very specific manner, ... and in a slightly different way for ... the data bus in response to the right IN instruction. (I touched ... on this when discussing the programmable trap earlier in ... -
Program Counter question - please readSorry if this is in the wrong forum, but please read it through anyway - see on the FUSE PSP emulator I asked the author if he'd add an option to pri…
... which has no IN instructions. The no IN instructions part is easy ... could be monitoring a byte in RAM which is updated ... important IN instruction would be occuring in the interrupted state but not in the ... situation is both equally common in a normal non-crashed ... -
Top 48k Spectrum Chess TitleNow the UK football is finishing I'm sick as a parrot. So my thoughts have turned towards... ZX Spectrum Chess! [B]The Speccy 48k List[/B] Chess - T…
... castling (king-rook) in Cyruss II or in PSION Chess? As matter ... fact how to perform castling in any of chess titles available ... of different key codes, looked in instruction manuals and nothing...
Bye -
Top 48k Spectrum Chess TitleNow the UK football is finishing I'm sick as a parrot. So my thoughts have turned towards... ZX Spectrum Chess! [B]The Speccy 48k List[/B] Chess - T…
... castling (king-rook) in Cyruss II or in PSION Chess? As matter ... fact how to perform castling in any of chess titles available ... of different key codes, looked in instruction manuals and nothing...
Bye ... I just used to type in the start and destination ... -
Games hacked to be played with Sinclair Joystick #1 (67890)I have mentioned a few of these in other threads, but I think they kinda deserve their own... I have been hacking a few of my favorite games which ha…
... guide: Search for keyboard routines in the games. They always use ... IN instructions on port $FE, something ... could use any other IN instruction, not just IN A,(NN)):
IN A, ($FE)
Then ... -
Database correctionsHi, some infoseek database corrections: -[url=http://www.worldofspectrum.org/infoseekid.cgi?id=0011580]Chemistry[/url], misprint in authors name, mu…
... didn't give any information (in instruction or on inlay) about 128k ... -
yeah - unix for zx spectrumI started a new hobby project. An operating system for ZX Spectrum. A unix clone. Talked to my friend about it and he asked me what if after I'm done…
... pointers (the "jp (ix)" instruction takes 8 cycles), slow 16 ... key row in b can be replaced with a single instruction "rlc ... rows for no keys in a single IN instruction (just clear more than ... one bit in B).
< ... -
Serial protocol, help!Hi, simply trying to find best way to transfer programs from PC to real ZX Spectrum for testing purposes. Under Windows I tried using Spxfr and it w…
... just won't do. The in instruction needs 11 t-states - ... write to accumulator. So when in instruction executes - it reads the ... t-state of an in instruction). Then 4 (in instruction write cycle) + 4 ... start bit comes in the midst of the "in" instruction, but after ... -
Serial protocol, help!Hi, simply trying to find best way to transfer programs from PC to real ZX Spectrum for testing purposes. Under Windows I tried using Spxfr and it w…
... calculations for the combination of IN,(L) plus JP (HL ... I]) was an option. In a multitasking environment it ... almost perfect. It executes in 5 t-states if ... 7 t-states of the IN instruction (total length=11 t- ... t-states)
In theory, of course. :) Now ... -
Challenge Sprint 4x tape recorderHi, I noticed a [url="http://www.worldofspectrum.org/infoseekid.cgi?id=1000051"]Challenge Sprint[/url] on eBay, and checked out the WoS entry for it…
... /> ;C = 0FFh (for the IN instruction)
;BC' = 1601h. C ... , 7Fh
ROM:0484 in a, (0FEh) ;read SPACE ... exit.
ROM:0495 in a, (c) ;reads clock ... carry.
ROM:049E in a, (c) ;reads ... -
Best way to read a key row?Hi All, I must confess that reading the keyboard is the bit I understand least about when coding, I've found some things that work for what I want t…
... pair register, you could use IN with 8bit port (immediate data ... wait_key:
xor a
in a,(254)
and 31 ... />
when you use 8bit IN instruction, z80 cpu will put A ... lower byte of address bus (in this case higher byte will ... -
writing an emulator-newbie needs helpHi, this is my first post here. I decided to write a minimalistic emulator of ZX Spectrum-no emulation of advanced peripherals, no emulation of sound…
... during your emulation of the IN instructions, to reflect the state ... keyboard at the time the IN instruction is executed (which, when you ... re in (these values where in one of my earlier posts in this ... . This was also mentioned earlier in the thread too.
< ... -
writing an emulator-newbie needs helpHi, this is my first post here. I decided to write a minimalistic emulator of ZX Spectrum-no emulation of advanced peripherals, no emulation of sound…
... 't reading the keyboard. An IN instruction can appear anywhere, not just ... to step through the code in your own emulation and compare ... -
Earthraid[img]http://members.inode.at/838331/zx/Earthraidingame.gif[/img] "Earthraid" is available from my homepage now. This is a conversion of a C64 game. I…
... a sound effect, and build-in instruction. -
Edge Connector InformationHi Everyone, Hope I'm posting in the correct forum. I've recently been playing with an Arduino and got to thinking it would be fab if I could do so…
... interfaces work, though bear in mind this is about detecting ... the data bus during an IN instruction. A robotics interface should read ... data bus during an OUT instruction and latch them.
< ... , when triggered.
In your case, you would feed ... -
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…
Because if you do an IN instruction with the lowest address bit ... disk interface (which is #EF in the low byte, so you ... A3 going low, hence #37 (IN 55). It's either that ... -
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…
... live. It's not an instruction to sample from it at ... plug loads of joystick cables in :)[/QUOTE]
But I ... latched joystick selection on an IN instruction. What's likely to go ... -
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…
... latched joystick selection on an IN instruction.[/QUOTE]
Ah, tell you ... are dead then you could in theory just feed the data ... is only active during the IN that would be perfectly adequate ... -
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…
... ASIC also responds to the IN instruction. If you've found a ... -
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…
... ASIC also responds to the IN instruction. If you've found a ... have already talked about this in another branch. -
Halls Of The ThingsCan anyone explain to me what is good about this game?
... it doesn't mention that in instruction screen. 5678 for direction select ... -
IF1Bis problems. The Edge of the Spectrum...Advice is sought from the learned on WoS. I just bought an Interface 1Bis from sunny South Africa. It arrived fast, but unfortunately doesn't work.…
... it using small aplet as in instruction. Afther I started GBL.ZZP ... -
IF1Bis problems. The Edge of the Spectrum...Advice is sought from the learned on WoS. I just bought an Interface 1Bis from sunny South Africa. It arrived fast, but unfortunately doesn't work.…
... it using small aplet as in instruction. Afther I started GBL.ZZP ... -
Strange keyboard port reads on 48+Hi all, I don't know whether it was already discussed (I also searched forum, but there are too much of results searching "48k keyboard" so I didn't…
... will print the value held in BC register and not the ... value in A.[/QUOTE]
And ... doesn't want the value in A, which we already ... the address of the IN A,(n) instruction that caused the keyboard ... upon the address of the IN instruction. -
Strange keyboard port reads on 48+Hi all, I don't know whether it was already discussed (I also searched forum, but there are too much of results searching "48k keyboard" so I didn't…
... definately it have connection to "IN" addresses, thank you for ... get all addresses you reported in the your post and ... at the beginning of the "IN" instruction, but one byte later, and ... created that second program where "IN" instructions are only at addresses ...
