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A table of AY frequenciesHi friends, Simple request I hope; does anyone have source for a table of note frequencies on the AY chip as used in the Spectrum 128? I had a loo…
... anyone have source for a table of note frequencies on the AY ... -
Opus Discovery "the big switch on" (after 20 years)I have a few of these Opus Discovery's with different Eproms in that have not been swiched for 15-20 years or so . I am in no rush to switch any on …
... a very old schematics with table of ports adressings:
-the NMI ... have:
a capacitor blue of 100n over ic5 (74ls73) ??
probably for a led of power??
finally triple switch ... the system, what type of transformer should i use?
ANNOUNCE: ZX Spectrum Game Coffee Table Bookhello peeps. I'm about half-way through writing a full-colour 250 page 8.5x5.5 inch coffee-table type book about Spectrum games from 1982 through 19…
... .5x5.5 inch
coffee-table type book about Spectrum games ... />
I've put the table of contents and some sample pages ... get a
healthy discount, of course. Assuming there were enough ... I looked at the possibility of getting this one
published ...automatic relocating of non-relocatable codeI was pondering upon the problem of changing absolute addresses used by CALL, JP, etc. when code is moved, without reassembling at the new location; …
... ;HL=actual runtime location of ADJUST
ld ... LOCATE ;DE=assembled location of ADJUST
and ... de,hl ;HL=address of location to change
...
;a simple example table of address+content word pairs to ...Getting the contents of tablesHi All, I'm risking a potentially daft question here as it seems pretty fundamental but here goes: What's the best way of pointing register pairs a…
... /> What's the best way of pointing register pairs at the ... /> eg if I have a table of tile data and want to ... data, and repeat a number of times I would do this ... ,(ix) command!), I'm aware of using sp to do this ...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…
... To open a set of 65536 ports for writing I use LD ... and low bytes of the 'address' of the set of ports you want. Executing ... instruction then opens the set of ports for writing.
... some of the controls alongside some conventual out accessed ports and ...DIVMMC / DIVIDE and combination with next interfaces (compatibility)Very often we can read about problems of ports collision or incompatibility between devices. Here is way for identify devices compatible/usable with …
... can read about problems of ports collision or incompatibility between ... first you must in ports table select your DIVIDE ... ports table which contain only interfaces without memory, removed ports of ... based devices are on begin of ports table - DIVIDE and DIVMMC. ...ANN: SP1 for Z88DK (aka splib3, Sprite Pack v3.0)Well it's finally arrived, after a month of "a few days from now" release deadlines. SP1 is the lastest version of splib, a flicker-free software sp…
... most of the code will be reused in all other ports.< ... are looked up from a table of udg addresses using the ... are looked up from a table of attribute addresses using the ... be used in a table look up to find ... allowed the older version of this engine to rotate ...Goldfinch - an open software stack for mass storageYep, another pet project of mine to compete with all the others I've started. But hey, if I didn't get distracted by things like this I'd just get di…
... I/O, from sockets, RS232 ports, files, the lot.
[/ ... contains an optional user-specified table of letter and device driver address ... the driver in the aforementioned table that is associated with the ... an index to a jump table, along with parameters passed ...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…
... . We must create table of old existing hardware for ... original kempston mouse interface = dangerous (ports collision)
... enable (both devices use different ports)
DIVIDE PLUS ... speccy.cz/other/zx-ports-full-table.txt[/url]
...The new Superfo cloneHi In the spanish forum speccy.org some guys and me have optimized the superfo clon to have less ICs. The actual design has 39 ICs versus the 45 ICs…
This is actual ports of Putnik's 8bit CF ... br /> [/code]
This ports conflict with this external devices ... incomplete adressation :-(
TABLE OF PORT ADRESSATION (old/original devices ... for select stable CF ports (CF ports will always enable) then ...The Disciple clone... doable?Hi. As a spectrum user in the 80's this was the dream interface all-in-one for me. I have a 48k+ and planning on get a 128K toast-rack later. Anyway…
... to determine which set of ports to decode (drive 1 ... one or two control ports. The DISCiPLE is ... to the WD1772 I/O ports.
[ ... involves generating a truth table by cycling through all ... might struggle with subtleties of electronics terminology at ...Database model ZXDBRecently, I have been trying to figure out how to provide my contribution to whoever takes over WoS archive rework next... So I came up with this: …
...
* platforms -- lookup table of other computer platforms
* ports -- ports of an entry to ... other platforms
* publicationtypes -- lookup table of publication ...Easiest way to figure instruction lengthGiven a start address, what is the easiest way to find out instruction length at that address in Z80? I found [url="http://www.z80.info/decoding.htm"…
... 8 ; This is the number of ports (rows) to check
table address
DEC E ; ... INC HL ; Go to next table address
DEC E ; ...AY musicThis is a format I'm proposing for an AY music player. If anyone can see any problems or anywhere it can be improved please say so. An AY music form…
... for keeping track of the beginning of the stream for ... 2byte - the current position of the stream
Volume ... to a 512 byte table of 2byte values containing the ... structure is made up of 4byte data containing the ... shifting the end of each block of data to the ...Which ZX games are you playing at the moment?Hi! KiloByte e-zine is finally going to be released by the end of this month (at least I hope so ;) )... SOOOO.... We wanna know what games you a…
... be released by the end of this month (at least I ... just want to create a table of most played ZX games in ...InterruptsA small piece intended for the FAQ. Comments, corrections, additions welcome. Notably: * How long does the 48K ULA hold /INT low? * What happens i…
... During the last M-cycle of every every instruction, the Z80 ... is to set up a table of 257 identical bytes at ... in the ROM as a table of 257 0xff bytes and ... 0xffff. Then, the first byte of the ROM (DI, 0xf3) ... 4 tstates: read high byte of 'nnnn' and decrement SP.< ...Calculate screenaddressWho knows where the topic about the fastest screenaddressroutine is? I can't find it in a search.. The fastest routine was to load a large table of …
... was to load a large table of all the screenaddresses by all ... /> [code]
LD H,250 ; Table 256 * 256 = 64000
LD ... /> LD A,(HL) ; first part of lo-byte is X-dependent ... ,224,224,224,224
(table 3X)
ORG 64512 ...TZX exportQuick yes/no please guys: is there an easy way of exporting the table of contents of a TZX file (eg, the display on the virtual cassette recorder in …
Quick yes/no please guys: is there an easy way of exporting the table of contents of a TZX file (eg, the display on the virtual cassette recorder in Spectacular) to clipboard/text file?Problem with rotating procedureHi folks! I wrote a proc in z80 asm, based on: x' = x * cos (z) - y * sin (z) y' = x * sin (z) + y * cos (z) I used a precalculated table of sin a…
... />
I used a precalculated table of sin and cos data. I ... not easy to write any of mult and div procs on ...Help hacking Split PersonalitiesI`ve been hacking away at Split Personalities for the purpose of putting new screens and graphics (items). The current screen is at 41187 and is 160…
... br />
Here is a table of the levels at 53901.
; Levels table
org 53901
defw ... the table above, I can't make head nor tail of it ... like a mixture of code and a table but I can' ... t make any sense of it ...New compression method: Exomizer 2After I finished working on optimizing aPLib's decoder, I was told that pucrunch did compress better, and while looking for info about pucrunch (it t…
... to generate a table of 156 bytes, but that table can be discarded ... ]
The normal versions of the depackers use the output ... , the simple version requires the table to be aligned in a ...Snare missing credits.The WoS Infoseek listing for the game [URL="http://www.worldofspectrum.org/infoseekid.cgi?id=0004594&loadpics=3&model=spectrum"]Snare[/URL] seems to …
... seems to be missing some of the "people" mentioned on ... screen, menu and high-score table of the game.
[ ... high-scores have this extension of credits:
[IMG]http ... Mckenzie
High-score table:
Holburn Software (distributed the ...[Need an Editor] Rodnay Zaks' Programming the Z80I'm submitting to WoS this book (as available on [url]http://www.worldofspectrum.org/infoseekid.cgi?id=2000292[/url] - English Version - 2nd Edition)…
... - 2nd Edition) with an included Table of Contents.
I'm ... doing this as part of my intention to do some ... ;80Mb books) and create a Table of Contents for every title.
of folks [B]that know this ...[Discussion] Planned corrections to: The Complete Spectrum ROM DisassemblyOk, folks. Since I'm not obtaining replies from those involved in the previous effort to transcribe The Complete Spectrum ROM Disassembly, I'm going …
... corrected PDF along with a Table of Contents and corrections to ...
---------------
[B]Errata as of December, 28[/B]
of maintaining a separate errata. ... goals when the transcription of the book was decided.< ...Detecting Spectrum modelsIs there any sure-fire way a program can detect the model of machine it's running on (48K, +, 128, +2, +2A, +3, clones) even when running in the 48K …
... program can detect the model of machine it's running on ... running in the 48K mode of the various machines? I know ... fail that depended on a table of 255s in the ROM to ...Tips on optimizing some newbie assembly routinesI'm starting to learn some assembly language. The best way to learn is to actually code something you are going to use, so I'm creating a very simple…
... I have a grid of characters, a table of characters, and a routine ... characters from the table. It's some kind of simplified SP1, ... # and attribute) and the table of characters (named _MB23_tileset) which is ... just a 2048 byte table of 256 8x8 tiles.
...Retrovision 2010 - 5th, 6th & 7th Feb 2010Event: Retrovision2010 Dates: 5th, 6th and 7th February 2010. Location: Folly Bridge Inn Pub, Oxford. Ticket Price: ?15 Ticket allocation: 75 Tickets…
... just a a bit of of fun and everyone is ... one :-)
RV2010 TABLE OF CRAP(TM)
At ... useful and thus the RV Table of Crap(TM) was born! ... money pot somewhere near the table of crap, and you are ... moneys raised from the Table of Crap will be kept ...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…
... is, the ULA uses 32768 ports. Most of the remaining devices (ZX ... leaves 254 ports available. SpectraNet will use four of those ports, but that ... the last device connected). Allocation of ports will be by committee. Devices ...LDIR timings in contended RAM?The 48K Spectrum technical reference page ([URL="http://www.worldofspectrum.org/faq/reference/48kreference.htm"]here[/URL]) describes the detailed ti…
... ]) describes the detailed timings of contended RAM. It gives ...
I can decipher most of the description for LDIR:
of (HL), but it ... Adding 4T to the duration of a LDIR instruction (normally ... b]" mean in that table of timings?
