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Compatible SpectrumsFollowing some recent coding exploits I've been thinking about compatibility of various models of ZX Spectrum. Yes, it's a common question on the for…
... /+3 had different pages of contended RAM (I think 1, 3 ... -
The worst games in the archive.What are the worst game in WOS's archive. I came accross two real baddens yesterday: Stupid Sports it so bad its actually fun: [url]http://www.wor…
... [/url]
Even the instructions are more intersting than the ... -
RrcaI'm having trouble finding an exact explanation to how all the z80 instructions work, but I get by ok on most of them. I'm sure I've been given link…
... to how all the z80 instructions work, but I get by ... -
Ports AccelerationOn ZX48 or 128/+2(grey) is contended and uncontended ports. For example: if you will read 512 bytes sector from IDE device to ZX ram via INI or INIR,…
... or 128/+2(grey) is contended and uncontended ports.
For ... , half of all ports will contended (slow down by ULA). ULA ... A14=1, ports is slow (contended)
If A15=1 and ... is set, ports is slow (contended)
Example of slow ... -
Halloween Special!Like all the best zombies, the ZXSpin project rises again on the last day of October. Here's release 0.666 for your enjoyment - get it at [url]http…
... />
- The assembler now accepts instructions at the start of a ... -
New assember ideaAs i work with Eclipse IDE in my job i become more and more lazy. This leads me to idea that it is time to left Notepad+Tasm combo behind and move on…
... compile a set of asm instructions etc.
2] REP directive ... for not defined labels, unknown instructions etc.
3] folding for ... -
SPIN's breakpoints - an overviewAs quite a few people have been asking how to set breakpoints on memory write etc. in SPIN, here's a description of the way the breakpoints work. Get…
... . This means that for such instructions as "OUT (c), a", the ... -
ULA RAS, CAS cycles, refresh and "snow effect"Hello everyone. I have a question, does anyone observed timings of RAS and CAS generated from ULA? I think there may be answer to where the "snow ef…
... .
But how is contended memory refreshed? By constantly reading ... -
How does the Z80 communicate with hardware?How does the Spectrum (or Z80) interact with other hardware devices? I think devices can communicate with the CPU through interrupts, but how can the…
... use some special machine code instructions to send requests, or how ... -
The direct bus or indirect one... that is the questionThe Ethernet project continues...and I'm in a quandry. So I've managed to implement enough socket library for the W5100 that socket, bind, listen, a…
... can still use OUT/IN instructions to acccess the chip. It ... will require three I/O instructions, which is much slower than ... -
Code execution logging (Spin and EightyOne)I'm currently trying to analyse a piece of code by looking at the path taken through it while executing it. The easiest way for me to do this is to u…
... limited to the last "n" instructions (where "n" is a number ... -
Speccy, ZX81 and SAM games on EbayAll formats [url]http://search.ebay.co.uk/_W0QQsassZadjb[/url] The famous FRED discs for the SAM Coupe. Issues 1 through 33 inclusive Issues 45 & …
... Games. All complete with Covers / instructions.
[url]http://cgi.ebay ... -
Composite Video output problemHi everyone, I?ve got a problem that?s really bugging me. I have one Spectrum 48K and one Spectrum +3, both with Composite Video output modification…
... /> The modification is done using instructions from [url]http://user.tninet ... -
PowerballBy which I mean one of those little exercise gizmos with the gyroscope inside, and which has comprehensively defeated all my efforts to make it funct…
... 'm not helped by the instructions having been written by someone ... little wrist movement, so these instructions defy reality. As it is ... /> Can someone provide more helpful instructions in the correct wrist action ... -
There comes a time in a mans.........There comes a time in a mans life when he gets to a cross road, shall he turn left or right, he waits, unsure...pulls a fockin carrot out from his as…
... and an audio tape with instructions from M)
He ... -
Wizball - Finally............................Every Christmas, I fire up Wizball as it's tinkly tunes remind me of Christmas's past and I remember the first xmas morning that I got this game... …
... -Squad version, with rather vague instructions...
And then, mucking ... -
Help! Cauldwell's PGD.First of all I just want to say what an absolutely wonderful program The Platform Games Designer is. It's nearly everything I've ever wanted for the…
... program. I've followed the instructions but I'm not able ... help me out with the instructions, preferably step by step, i ... -
Work ForceHi Martijn Having looked through the inlays and cassettes of my collection of Work Force titles I noticed that: The Programmers Dream states 1982 o…
... Dream states 1982 on the instructions and cassette.
The ... />
Shifty states in the instructions "Published under licence from Gloster ... -
No.1 InlayAnyone here has an original of the Bug-Byte game "No.1" ? If so - could you PLEASE scan in the inlay of it (and maybe the instructions if there were …
... of it (and maybe the instructions if there were some) ??? Its ... -
Crash! - a pirate's best friend?Possibly a little controversial , but doesn't it seem odd that Crash! was the only mag to include an index of which keys did what in each game - very…
... to provide those with no instructions a handy way of making ... -
Panic confusionhi I want to report a confusion over the Mikro-Gen and PSS re-releases of Panic. I've got the Kryptronic one here, and it's definitely the PSS versi…
... ?id=0003595[/url] (Mikro-Gen, instructions & inlay should be for ... -
basito: CPC Basic interpreterHello. I'm writing a Basic Interpreter compatible with the Amstrad CPC series Locomotive Basic. It's still in a very early development stage, but al…
... variables, no operators, a few instructions and functions) programs under CPC ... -
A warning for anyone considdering Virgin Media as an ISPAfer virgin clevery removed all the files on my web space I was unable to gain access to it via my client CuteFTP. I have attempted to contact them a…
... :10 I have followed your instructions in using it.
[b ... well.
12:22 These instructions need to be made clear ... -
Astro Marine Corps - Spanish instructionsAttributes of the file AstroMarineCorps.txt are -rw------- instead of typical -rw-r--r-- ;-).
Attributes of the file AstroMarineCorps.txt are -rw------- instead of typical -rw-r--r-- ;-). -
Bizarre stuff in Interface 1's shadow ROMAccording to the Complete Shadow ROM disassembly, the function that exits back to the BASIC interpreter after interpreting IF1 commands is this: [co…
... few instances of invalid Z80 instructions. Presumably some assemblers recognise these ... -
3D Lunattack: message recorded on tape?I've been having a blast on [URL="http://www.worldofspectrum.org/infoseekid.cgi?id=0002955"]3D Lunattack[/URL], which has proven to be a surprisingly…
... problem is that the original instructions aren't available on WOS ... and the YS cover-game instructions helped somewhat!
Also ... had loaded. As with the instructions, this appears to be lacking ... -
Fuse for Mac OS X 0.9.0 ReleasedA new version of Fuse for Mac OS X has been released at the dedicated sourceforge project and shortly here on WoS: [url]http://sourceforge.net/proje…
... after BIT n,(IX+d) instructions (Philip Kendall).
[*] Fix undocumented ... -
Hopping madHi all, does anyone here know how to select a joystick at the opening screen? Pressing keys at random got me to the redefine keys bit, and pressing "…
... the inside bit with the instructions on. Help! -
Interface 1 emulation issuesFor Virtual Spectrum v3.0 I am implementing virtual Interface 1 and Interface 2 options! The I/F2 ROM option works already, and I have got the I/F1 s…
... I/F1 OUT and IN instructions as-is won't work ...