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Unravelling the Spectrum Floating Point Number formatHi Guys, In my head I pretty much understand how the Spectrum's 5 byte FP number format works. The first byte is the signed exponent and the follow…
... how the Spectrum's 5 byte FP number format works. The ... first byte is the signed exponent and ... small to bring the mantissa back to 0.5)
2e ... small to bring the mantissa back to 0.5)
[/code ... -
my ZX back to life and wins!Videocomposite modded, new membrane and...back to life! Sorry for the italian 'street' language, but Intel deserves it all! [IMG]http://i45.tinypic.c…
Videocomposite modded, new membrane and...back to life!
Sorry for the italian 'street' language, but Intel deserves it all!
[IMG]http://i45.tinypic.com/2ziy6c0.jpg[/IMG] -
Cures for back painYesterday not only did I go on a long unicycle ride, I was lifting and carrying things to sell at the car boot sale today. Now my back kills. Anyone …
Yesterday not only did I go on a long unicycle ride, I was lifting and carrying things to sell at the car boot sale today. Now my back kills. Anyone got any good remedies? -
Speccy collection prepping for sale - Pics includedHi guys, I made a post a while back about having to shift my sizeable collection due to incoming sprog. I gave up typing up the names, so I'm going…
... made a post a while back about having to shift my ... Wiedersehen Monty
Avenger
Back to Skool
Batman
Bumpset Spike
Buombscare
Byte Bitten
Cash Dash
90 games.. Anyone Interested before they hit ebay??On ebay - The whole Lot... Starting at 99p for all 90 of them... [URL="http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&item=130911315485&ssPageName…
... /> Snodgits - by Sparklers Single
Byte Bitten - by Firebird Single
Star Trader - by Bug Byte Single
Olympic Challenge - by ... case
Bounty Bob Strikes Back - by Big Five Clam
The Empire Fights Back - MastertronicFor the first time in ages I've updated my blog. The latest review is budget cult space based game The Empire Fights Back. Full review at [url]http:…
... based game The Empire Fights Back.
Full review at ...Enable 128kB paging in emulatorFrom Zx Spectrum documentation ([url]http://www.worldofspectrum.org/faq/reference/128kreference.htm[/url]) [CODE][SIZE="1"]When memory is being pag…
... any hardware.
The byte output will be interpreted as ... way to to turn it back on, only reset will help ... really need to enable it back.
Is there any ...Loft clear out = reunited with specify games - please help meHi all, I was wondering if someone could help me please? My mum recently downsized and I discovered all my old spectrum games hiding in the loft! Br…
... in the loft! Brought back memories but as I ... the edge)
Foxx fights back (image works)
Impossible ... br /> Joe blade
Back to skool
3 ... na nog
'Thing' bounces back
... party
Bug byte
Styx
Twin ...Clashbasher a new interface to reduce colour clashI've been working on this for a while now. [IMG]http://markamy.uwclub.net/cauldron.JPG[/IMG] Basicly its an add on for a 48k spectrum, which reinte…
... />
Also you cannot read back all the information that you ... be started whenever an attribute byte is changed, if a ... corrisponding display byte hasn't been modified before ... down then every byte corrisponding to that attribute byte in the display ...Hardware description - DivIDE interface[B][U]DIVIDE interface / DivIDE 2k11[/U][/B] [B][U]The main description[/U][/B] DIVIDE is IDE interface with own external memory. Thanks to very goo…
... read this instruction byte), after reading this byte is automatically ... . CPU read first instruction byte from external memory, disconnect ... read this instruction byte), after reading this byte is automatically ... After set bit CONMEM back to log.0 will active ...Adding a pause key to ArkanoidHaving rediscovered the simple pleasure of playing 1980s games on genuine 1980s hardware, I've also remembered that emulation can provide a feature m…
... port (0xFE) with the high byte of the port number specifying ... /> Address 0x84C2 contains the three-byte instruction LD BC,0xF7FE, preparing ... the snapshot. When it loads back and restores the memory page ...Hardware description - MULTIFACE 3[B]Hardware description - MULTIFACE 3[/B] This is description of MF3 clone, because I can't find more about original interface. Schematic and PAL ch…
... -D0(low 4 bits of byte) of values writed to ports ... detect if CPU read instruction byte from address #0066. If detected ... you can connect MF3 memory back via IN x,#xx3F [B ...Movin And A Groovin Horizontal Flip improvementOn the left is the flip horizontal portion from Andy Pennell'S excellent Movin' & a Groovin' machine code screen routines from Your Spectrum #19 (Oct…
... fliph2 LD A,(HL) ; grab byte
EX AF,AF' ; ... LD (HL),A ; poke flipped byte
ADD HL,DE ADD ... (HL),C ; and poke it back
EX AF,AF' ... ),A ; and poke it back
ADD HL,DE ...CD Back and possibly coverHello there, I'm in a band and releasing an ep in the very near future. Take a look at us on facebook here. [url]https://www.facebook.com/therealBNK?…
... a spectrum themed cover and back cover with the 2 song ...Machine code/Assembly language back in the dayHello. Back in the 80s when I was a kid, I didn't learn Z-80 machine code, but I was always curious about it. Just recently I decided to explore Z-…
Hello.
Back in the 80s when I ... people who were learning coding back in the 80s though.
back in the 80s, I would ... who were learning machine code back in the 80s?
I've been busy but I'm back[url]http://www.youtube.com/watch?v=V_R2qk8yIyk&feature=player_detailpage[/url] This is only part of an 80s themed video I'm working on. Its a home g…
... the 8-bit gaming industry back in the '80s. What I ...800+ Spectrum 128k & 48k original titles still availableHi guys, The original thread was a bit messy and has vanished from the front page, so rather than bump it, here it is again a bit tidier: All origi…
...
Avenger
Axe
Back to Skool
Backpackers Guide ... /> Buombscare
Butch Hardguy
Byte Bitten
Caesar The Cat ...LZ4 decoderI encountered the [URL="http://code.google.com/p/lz4/"]LZ4 compressor[/URL] a few weeks ago. Reading the [URL="http://fastcompression.blogspot.co.uk…
... ld c,a ; copy into byte counter
cp 15 ; see ... /> ex af,af' ; switch token back into accumulator
and 15 ... /> ld a,c ; read low byte of byte counter (4T)
.getlength_2 ...Issue 3 board with strange piggy-back boardIn case you are interested. I?ve never seen something like this before. I have an Issue 3 board here. When I opened the case and found a strange pig…
... and found a strange piggy-back board. This one reads "Logitek ...Nasty 'Gotcha' for multicolour timingI thought I would be better developing my multicolour routine on the 48K first, being the slowest, so it would then be sure to work on the 128K varia…
... form which is one prefix byte longer than using HL. There ... you perform two of these back-to-back in contention, the delay ...Assembly code auto optimiserFor my Finders Keepers Plus project I'm considering writing an Assembly code auto optimiser. Way back when I wrote the original FK I considered optim…
... Assembly code auto optimiser. Way back when I wrote the original ... this would have saved a byte every time and sometimes two ...Moby Games goes back to old layoutI remember on these forums some people complaining in recent months about layout change of Mobygames, the biggest game website. Unfortunately I could…
... has it old classic layout back :)
[url]http://www ...harvard architecture spectrum clone.I got my first +2 before christmas. I'd never given the 128k spectrums much thought, always been a 48k rubber key tradionalist. :smile: I've been me…
... for some of the multi byte indexing instructions that possibly have ... could it have been done back in the 80'sULA snow effectIt's wintertime, you know. [quote="http://ramsoft.bbk.org.omegahg.com/floatingbus.html"]when the I register falls in the range 0x40-0x7F then the UL…
... beam reached the 1st screen byte.
2. Load R with ... .
5. 96T delay, loop back to 2 192 times in ...Using the stack to blit bufferI was using a ldir to blit my back buffer to the screen RAM, and it was working pretty well if not rather slow. After reading about using the stack …
... a ldir to blit my back buffer to the screen RAM ... 'm trying to move 18 byte wide lines from memory to ...Depressions back!I know I keep saddling you all with my depression stories, but seen as so many of use here have been or are being touched by it, I thought it accepta…
... discussed on this site is back again. It's never gone ... have days where is comes back really strong and others where ...Tape Clear Out!Right, I'm having a clear out of all the tapes I don't want, I'll upload some cover tapes and big box lists in a bit, but to kick things off, here is…
...
Rugby
Bug-Byte
American Football
Glass ... />
Firebird
Back To The Future
Beam ... Sherwood, The
Empire Fights Back, The
FA Cup Football ...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…
... cycle write the number right back on top of itself leaving ... to do is poke the byte you want to transfer into ... LD (HL),n and the byte is transfered to the cpld ... input/output instruction swapping the byte in the spectrum memory with ...
