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Sprite RotatingI was looking (actually at Everyone's a Wally), and noticed that all the graphics for the main characters are left facing, and two characters wide. …
... or IY Registers, No Alternate Register set, No Block instructions and ... you write the rightmost 2 bits into Address 1, the leftmost ... 6 bits into Address 2, Address 2 ... ready for the rightmost 2 bits of the next graphic character ... -
7805 Regulator HelpI am hoping to replace the 7805 regulator in my issue 3 48K Spectrum soon. Unfortunately I don't know exactly what to buy to replace it with (my fat…
... you have some spares, and select supplier on shipping cost. If ... /"]Bitcycle.org[/URL] - just flipping bits -
Rest in Peace, Jonathan Smith (was: Frobush Absence)You may or may not have noticed the absence of the honourable Frobush aka Jofa Smifff from your forums... The explanation is a little sad but does ha…
... due to a bad I register setting.
As Jof only ... , that would be in the bits Joffa didn't write ...
RFC: ZXI hardware interface standardisationReposted from c.s.s to reach a wider audience [QUOTE=Andrew Owen] You may have noticed that there are more people making add-ons for the Speccy than…
... * 0x023B - Programmable trap register
* 0x033B - Control register [/B]
SELECT ZX MODEL:
WRITE to ... dec)
SELECT INTERFACE:
WRITE to port ... dec)
SELECT ROM:
WRITE to port ...problem with DEFADD storageI have a function: DEF FN t(t$,m,t)=USR t which is called with, for an example: LET bc=FN t("t$()",mcworkspace,mcputt) where, at the time: mcworkspac…
... .1xxxx... where xxxx are the bits that appear in the mantissa ... more direct route with less register/stack juggling, but this is ...Common pitfalls and solutionsLet's discuss some of the common problems in Speccy programming, and the methods we use to avoid them. For an example, here is a piece of code that …
... what happens
;if you select 48 mode from the menu ... 7 is used to store bits of BASIC
;and other ...ZX48K 128K modHas anyone make this mod to the ZX48K? Does it work? [URL]http://hw.speccy.cz/128krebuild.html[/URL] Micky
... that modification, but including the AY, a 32KB EPROM, and putting ... are you using the spare bits in #7FFD to 512K, or ...New stereo audio board for fitting on AY chip - interested?Hi, I developed a small board that fits on the AY chip inside 128K ZX Spectrums: [IMG]http://www.benophetinternet.nl/hobby/vanmezelf/stereo_audio.j…
... only an external switch to select ABC or ACB? That's ... B and C signals from AY would run through about 20 ...New stereo audio board for fitting on AY chip - interested?Hi, I developed a small board that fits on the AY chip inside 128K ZX Spectrums: [IMG]http://www.benophetinternet.nl/hobby/vanmezelf/stereo_audio.j…
... only an external switch to select ABC or ACB? That's ... B and C signals from AY would run through about 20 ...Z80 Machine Code Question...Hi Folks, I know not strictly a BASIC question but I have started to learn Z80 machine code - 25 years too late! :smile: I have been reading a book…
... all the remaining bits together in the A register, and that would ...Z80 Machine Code Question...Hi Folks, I know not strictly a BASIC question but I have started to learn Z80 machine code - 25 years too late! :smile: I have been reading a book…
... that (a) ORs the bits with the A register and (b) sets ... take advantage of the B register as the inner loop and ... counter, you can use other register (e.g. C) to hold ...Z80 RRCA instruction...Hi Folks, Well my exploration of Z80 MCODE continues apace! I am struggling to understand how the RRCA instruction works. The official Zilog manua…
... (Shift Left Logical). SLIA shifts register left and sets the least ... to do. On the Z80 bits page, wherever you see it ...sid tune remix on spectrum?I wonder if there is any way to convert c64 sid tune to spectrum? I like Matt Gray's c64 Driller theme and would love to have on speccy. Something li…
... should convert the dump into AY registers dump, pack it, and ... the XL's example - it register dumps would be cool too. ;)SZX Beta 128 (aka TRDOS) block questionHello, I have a question or two regarding the Beta 128 (aka TRDOS) block of SZX. Hopefully someone (Jon, Philip) will help me. What is supposed to …
... for the upper two bits of the system register, they're pretty ...SZX Beta 128 (aka TRDOS) block questionHello, I have a question or two regarding the Beta 128 (aka TRDOS) block of SZX. Hopefully someone (Jon, Philip) will help me. What is supposed to …
... for the upper two bits of the system register, they're pretty ... DOS ROM sets the system register before every command again ( ... high transition of the system register RESET bit? Neither you ... this pulse when restoring the register...
[QUOTE=Fred; ...SZX Beta 128 (aka TRDOS) block questionHello, I have a question or two regarding the Beta 128 (aka TRDOS) block of SZX. Hopefully someone (Jon, Philip) will help me. What is supposed to …
... , i.e., the high two bits for the signal lines input ... value written to the system register?[/QUOTE]
BTW, I ... - the state of those two bits is pretty much given...
Z80 RRCA instruction...Hi Folks, Well my exploration of Z80 MCODE continues apace! I am struggling to understand how the RRCA instruction works. The official Zilog manua…
... . So we need an extra register 'on the left side' (which ... be 'A'), to catch the bits that are shifted out of ... ,16 ;counter for nr of bits
XOR A ;clear A ... to left,
RLA ; these bits go into A
JR ...Whats your definition of "geeks" and "nerds"?I see that being a geek or a nerd is something that is coming more fashionable ,i have no idea or what it would take to be one,but i think its being …
... ;471072]Hello. My name is AY Chip. I have professionally diagnosed ... effectively with other people. Very select illness Asbergers. Having trouble reading ...SpecOS progressOk, As you can all see, I'm back - and I've been working away on SpecOS for a while now. There's a few videos, which you can see on my blog: [url]h…
... CTRL), and maybe ENTER to select the line to edit (instead ... then serve two purposes, to select the line for editing, and ... 'll be ripping it to bits as it is.
ANN: EsxDos 0.73 released (third party - not mine)Papaya Dezign have finally released their firmware/OS for the DivIDE interface. Go get it from [url]http://www.esxdos.org/files/esxdos073.zip[/url]…
... Velesoft on my +2. I select the image, go to 48K ... writes to the memory paging register.
To force 'true ...updated Fatware - keyboard patchHi! I work with Fatware code and already prepare keyboard patch for original version 0.12. Now it's possible to operate disk browser with keys: 1) c…
... show any files when I select 5.Divide in the menu ... play list mode, only for AY/TS/FM modules!
1,2,3,4- select drive (A,B,C,D ...Gauntlet III (missing artist)[URL="http://www.worldofspectrum.org/infoseekid.cgi?id=0001993"]Gauntlet III[/URL] SJS in the middle left. [img]http://www.worldofspectrum.org/show…
... left, you couldn't even select all the weapons without the ... seem to remember the little bits of A4 on the doors ... saying!)
The bits I did see playing correctly ...designing a computerHi everyone! I am designing a 4 bit computer and i need some advice, is this a good instruction set? [CODE] BINARY OPCODE DESCRIPTION 00000 nop…
... . But there is four bits spare and because 16 instructions ... last four spare bits another instruction. You must select EITHER the first ... four bits or the LAST ... four bits, YOu must not select both ...designing a computerHi everyone! I am designing a 4 bit computer and i need some advice, is this a good instruction set? [CODE] BINARY OPCODE DESCRIPTION 00000 nop…
... the instruction into two four bits, that way i can squeze ... does not mean register n. It means a register defined by the ... /> The memory units store 8 bits of data at one time ... well use the extra four bitsdesigning a computerHi everyone! I am designing a 4 bit computer and i need some advice, is this a good instruction set? [CODE] BINARY OPCODE DESCRIPTION 00000 nop…
... and a mandatory 4 bits for 16 registers. The ... Z80 generally only commits 3 bits (up to 8 registers ... rrr bit and 5 bits (32 different instructions for ...
3) Allocate 5 bits for the instruction type (LD ... AND C (AND register C with register A) will become ...designing a computerHi everyone! I am designing a 4 bit computer and i need some advice, is this a good instruction set? [CODE] BINARY OPCODE DESCRIPTION 00000 nop…
... hop between 4 bits, 5 bits, 8 bits and 16 bits depending on what ... still dropping in references to register 'a' - or do you really ... mean that the register 'A' (addressed as 1010) is ...designing a computerHi everyone! I am designing a 4 bit computer and i need some advice, is this a good instruction set? [CODE] BINARY OPCODE DESCRIPTION 00000 nop…
... location pointed to by that register, for example:
... distance in the bottom four bits of the opcode, bbbbdddd ... purpose PC, the highest numbered register is used, for you ... xxx, i for indirection, rrr=register
10xxdddd - branch operation ...The Programmers Development System (PDS)Hi everybody, I recall this system has been mentioned several times on WoS forums. Last time was, I think, when those sources from Maz Spork (Buggy …
... link and have purchased various bits and pieces that should do ... code to work with the AY-3-8912 RS232 hardware...
After Burner and Flight ControllerI'll be selling this on Ebay soon. I was just wondering what you all thought about this combo? [img]http://www.scottieuk.plus.com/AB.jpg[/img]
... flight controller so that you ay use it as you find ... the base allows you to select between player 1 or 2 ...
