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z80 Helper?When you are programming with z80 do you get 'lost' you are in the middle of making a routine and you can't remember which registers are holding val…
... /> Another problem is using a register in a function that is ... -
Fastest way of reading from EAR portI'm trying to work out the fastest way of reading data from the EAR port and assembling the bits into a byte. I came up with this code: IN A, (C) ; …
... D ; shift carry into D register, 8 cycles
... repeat 7 ... -
+2/+3 replacement power supplyI'm getting a black keyboarded +2, it has no power supply so I'm trying to source a possible equivalent if i cant get a genuine one, I know an atx s…
... -5V-12V-5V-12V-suply-Q-60B-ac-dc-converter-good ... -5V-12V-5V-12V-suply-Q-60B-ac-dc-converter-good ... -
New ZEsarUX 5.0Hi! ZEsarUX 5.0 is out! :) You can download it from the URL: https://sourceforge.net/projects/zesarux/ Finally I have succeded emulating Si…
...
* hexdump-internal
* set-register
Added Easter Egg ...
Fixed bug reading ULAplus register 64
Fixed bugs paging ... -
Spectrum A to ZWhen I can't sleep I try and list things from A to Z, sometimes I do this with Speccy games. It takes a surprisingly long time, Q & Y are the hard…
... takes a surprisingly long time, Q & Y are the hardest ... -
Chrome - ZX Spectrum clone with Italian rootsSome you might know that the Italian ZX Clone been around for a while. The project was started by Mario Prato in 2004 and last year was re-created by…
... ="http://aticatac.altervista.org/portale/?q=node/2"]aticatac.altervista.org ... /portale/?q=node/2[/url]
ZX Dev - Conversions * New Spectrum games Compo!! *Hi Everybody! A new edition of the ZX Dev has just started, we have been planning it for the last weeksand finally we have come up with this speci…
z88dk sp1lib with fzxThe numbers dont seem to display properly? fzx by itself works [quote] // for targets supporting fzx // zcc +zx -vn -startup=31 -O3 -clib…
... ('p');
joykeys.up = in_key_scancode('q');
joykeys.down = in_key_scancode('a ...Multiple Simultaneous Keypresses and PC KeyboardsAn issue was brought to my attention that a short test program that detects whether the QAOP,space keys are pressed was not behaving as expected. …
... in this order: q then a then o. q and a are ... order: o then a then q. o and a are registered ... as pressed, q is not.
This ...URGENT / IMPORTANT: BANDERSNATCH (QL MIA)This is the BEST dump I can do on 5 different Bandersnatch MD's I found until then: https://www.dropbox.com/s/t9fws8qlmek2ng4/bsnatch_bk?dl=0 Z…
Interface devices interfering with keyboard functionHi, After over 20 years away from owning a ZX Spectrum +2, I recently bought a reconditioned ZX Spectrum + and, after reading about some of the ne…
... plugged in, it won't register.
Does anyone know ...Key repeat weirdness with EI & IYI finally (after 35 years!) decided to write something a) for 48k speccy b) in z80 assembler. It's been over 20 years since I've written anything in …
... /> Should I not use iy register pair when I have EI ...New Windows Spectrum Emulator: CSpect V0.2 ZXSpectrum emulator by Mike DaillyNew Windows Spectrum Emulator: CSpect V0.2 ZXSpectrum emulator by Mike Dailly (Found on SpecNext Facebook-Page) Info and Download (=klick "CSpe…
... , $243B ; select the X scroll register
ld a,22
register
ld a,23
Register $20 ; Layer 2 transparency color ...Suggested 'Universal' 16-colour paletteNot sure how this would be rendered on any of the Speccy 'enhanced' modes but it's an interesting piece nonetheless. Linking the Google cache since …
... /> http://webcache.googleusercontent.com/search?q=cache:jjlH69Z2gksJ:pixeljoint.com/forum ...shadow regs musingIn the process of optimising some assembler, it occurred to me how great it would have been if the Z80's shadow reg opcodes had been a bit more fully…
... a sort-of "pointer to register bank" mechanism.. originally intended for ... a quick register bank swap during interrupts, which ...Interrupts, 16k Spectrums and snowI'm writing something for the 16k Spectrum and I want to use interrupts. The avilable documentation doesn't seem clear enough for me to figure out ho…
... . Snow appears if the I register points to somewhere between 16k ...Step through assembly language whilst viewing registers and flagsHello, Is there anything available which would let me step through an assembler listing and see how each register (and flag) changes at each instr…
Hello,
Is there anything available which would let me step through an assembler listing and see how each register (and flag) changes at each instruction?
ThanksCover artistsI love many games inlays and adverts. In some cases are made by not very known people, and I think their names should be preserved. Why not having…
... /> - Cabal (Ocean)
- Chase H.Q (Ocean)
- The New Zealand ...Q. on Chameleon (never released)[url="http://www.worldofspectrum.org/infoseekid.cgi?id=0024381&loadpics=3"]Chameleon[/url] evidently was never released on the Speccy but I have a qu…
[url="http://www.worldofspectrum.org/infoseekid.cgi?id=0024381&loadpics=3"]Chameleon[/url] evidently was never released on the Speccy but I have a question on the in-game screen of this game on the Explorer inlay. It looks like it just might be a ...50 ZX Spectrum game endingsA compilation of 50 speccy game endings... Oh, and spoiler alert! :) https://youtu.be/B4wcrtL_V_c The list of games included is as follows: […
... :24
9. Chase H.Q. 04:03
10. Cybernoid ...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…
... ; otherwise, use a 16-bit register
;pair, such as HL ...Cattivik never dies: stage 1Hi all I am publishing the first stage of my new game based on the cartoon character Cattivik https://www.youtube.com/watch?v=jizYS01hBik&feature=…
... , your sprite will disappear: press Q+A to restart the screen ...Bomb Jack issueSo i came here to get my all time favourite... Bomb Jack I got the emulator, i got the file, the game loads fine but and when i try to do that sup…
... super jump with "X" and "Q" (at the same time), the ...TWINLIGHT[img]http://www.retrosouls.net/zx/twinlight.png[/img] Destroy all enemy pods with you laser beam and guide it to receiver! PS: We strongly recomm…
New infoseek now finds magazine TOC referencesThe results page needs tidying up, and the filters adding (I will start htis week), but the new infoseek engine is taking shape! You can now find …
... ="http://live.worldofspectrum.org/infoseek?q=backlash"]live.worldofspectrum.org/infoseek ...VADE RETRO IIVADE RETRO II Hello ¡! I have finished a new game (sorry). More or less, it´s the continuation of the VADE RETRO that I programmed in 2012: …
... :
[b]O-P-Q-A..........DIRECTION
M.....................FIRE ...Test of screen switching timings.I modified the btime.tap test by Jan Bobrowski to explore the timing of screen switching. The new test, ptime-128, produces different results on diff…
... -top screen corner (press the Q button to increase the cycle ...
