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Overflow Flag QuestionHello all, After a long hiatus (lost all code when my MacBook was stolen) i've gone back to the drawing board and am writing a Z80 emulator in REALb…
... checking to see if B = 0 after adding 1 to 255 ... is right - V is set if the overflow is from 127 to ... -128, not from 255 to 0. I keep ... -
RAM paging and port usageDear users and developers, I'm just trying to find some detail information about RAM paging on the Spectrum 128 and later models, especially those a…
... br /> port 7ffd bits 0..2 select one of 8 RAM pages ... /> if port 1ffd bit 0 is reset, same as Spectrum ... of the selected RAM page (0..31)?[/QUOTE]
... of the selected RAM page (0..63)?[/QUOTE]
... of the page number comes from bit 5 of port ... -
Overflow Flag QuestionHello all, After a long hiatus (lost all code when my MacBook was stolen) i've gone back to the drawing board and am writing a Z80 emulator in REALb…
... we have an overflow
select case addOrSubtract
case ADD ... is bit pattern 011 or 100 (i.e. an overflow)
end if
end select
End Sub[/code]
from 0x9A and should get 0x34 ... -
Overflow Flag QuestionHello all, After a long hiatus (lost all code when my MacBook was stolen) i've gone back to the drawing board and am writing a Z80 emulator in REALb…
... the operands I am sending from the DAA routine to the ... />
[code] // Bit 2 (P/V flag)
if FlagStatus( FLAG_N ... ) = 0 then
// Addition
CalculatePVFlag( ... -
Channels and streamsSo I've put some thought into channels and streams, and read the dead (and presumably rotting corpse) of the CSS FAQ which contains some information …
... way of transferring the ROM from a Spectrum to an Acorn ...
FORMAT "n";"dns:10.0.0.100" - set DNS server
FORMAT ... "n";"gw:192.168.0.254" - set default gateway
OPEN #10,"n","127.0.0.1:80" - listen on port ... -
Channels and streamsSo I've put some thought into channels and streams, and read the dead (and presumably rotting corpse) of the CSS FAQ which contains some information …
...
FORMAT "n";"dns:10.0.0.100" - set DNS server
FORMAT ... "n";"gw:192.168.0.254" - set default gateway
from the NMI menu. (This stores ... , a page is permanently mapped from 0x3000-0x3FFF when the Spectranet ... -
My Next Big PurchaseI'll be getting one of [URL="http://www.laptopsdirect.ie/Asus_Eee_PC_1000_Linux_-_Black_EEEPC1000-BK002/version.asp"]these[/URL] within the next week…
... impressed with the Advent 4211 from PC World...
[url ... =@@@@0446892725.1218478475@@@@&BV_EngineID=ccecadeeldkhhemcflgceggdhhmdgmj.0&page=Product&fm ... looking back was slow (and 100 quid more), this ones had ... -
Good 128k +2 emulator for Windows XPWhat emulator would you recommend for windows XP, to emulate 128k +2 Spectrum. I want to play Turbo Esprit like I did all those years ago! :-)
... admire it being written in 100% assembler (although just tried 2 ... />
Yes, it is (or from Joe Public's POV: will ... (-1 if paging is enabled, 0 if not) and SCREEN (number ... in use, either 0 or 1. Always 0 in 48K mode), all ... -
How to contend memoryHow has this been achieved, electronically? Is there a "memory ready"-line for each bank, or something?
... enable) line to read from the address on the bus ... a CS (chip select, active low) line to select this chip. The ... pin is set to logic 0, it is active. 'Active ... +5 volts), and logic 0 usually means the pin is ... grounded (usually 0 volts). A chip that ... -
Speccy AY-3-8910 vs. C64 SID ChipI thought I'd open this up for debate. Having owned both a C64 and a Speccy +2, my vote goes to the SID Chip; it is by far the superior sound synthe…
... Z80 V 6510. The Z80 urinates all over the 6510 from a ... powerful than both - but required 100% of CPU time in order ... , forget everything else and devote 100% of CPU time to sound ... -
'orange' on a spectrumalways wondered why spectrums could never seem to achieve the colour orange? wasn't one of the default colours, and don't remember seeing anything th…
... (f)ast",q$
100 REM main program
105 ... /> 200 PAUSE 0: POKE syspage,23: PAUSE 0: POKE syspage,31 ... 7 in at 49152 and select main screen at 16384 ... 7 in at 49152 and select second screen at 49152 ... run the above snapshot, and select (f)ast mode, you will ... -
manual or automatic car. And the german luftwaffe.gonna be taking my driving lessons soon, as my GF says she will give me her car (an automatic) would it be cheaper to take lessons for an automatic…
... simply can't get away from that.
All torque ... torque converter based transmissions suck from an efficiency stand point due ... cc)...instead of going 50-0 and 0-50 in short hops ... breaking using my fingers....from 5mph to 100 and back without using ... -
Sundown Demoparty 2008 12-14th September, near Exeter UK!Quoteth the website I hath made for event: "The UK's premier demoscene party is back for 2008 and is due to take place from the 12th-14th September …
... Sound system provided by Shevek (from Tech Adventure). This professional ... LIGHTING SYSTEM
VJ Lex from Pyrolighting / The Party Lab ... his panel quiz with four select sceners to test their ... After an evening of poor sleep and alcoholic abuse, utilise our ... -
Bresenhams circle algorithmI post here my final circle code to replace, if you want, the one in the ROM. It only uses integer math and runs very fast and is very compact. It is…
... in BASIC with you (taken from some Polish book)
30 LET x=0: LET da=INT (r/2 ... -
ANN: Spud v0.201New version of Spud released. Nothing major just a few bugfixes thanks to user feedback. At the soon to be usual link [COLOR=#4040c0][URL]http://…
... *,9 the result goes to 0.
21 - In calculator it ... /> 22 - In calculator, select Hex, select Word, enter FFFF, select Decimal, result is ... , if you set SP to 0 the Stack window seems to ... the stack window (top right) from showing anything!
26 - In ... -
ANN: Spud v0.201New version of Spud released. Nothing major just a few bugfixes thanks to user feedback. At the soon to be usual link [COLOR=#4040c0][URL]http://…
... *,9 the result goes to 0.
21 - In calculator it ... /> 22 - In calculator, select Hex, select Word, enter FFFF, select Decimal, result is ... , if you set SP to 0 the Stack window seems to ... the stack window (top right) from showing anything!
26 - In ... -
Sinclair PC 200 - RF questionIs there any compatibility regarding the RF output of the sinclair pc 200? This week i got my 2nd unit and in both of them, when connected through R…
... ).
Try to add about 100µF to C911. Use an ... 4.95 V.
[B]Try to add about 100µF ... . Inverting the tips i get 0 V AC).
[B]so ... not produce 50 Hz or 100 Hz noise[/B] - How can ... -
Cecco is overratedThe man has [B]literally[/B] no talent as a game designer at all. and I'm annoyed :) he is obviously one of the greatest programmers for the Spectru…
... WOSsers top 100 games, it was on a list from Your Sinclair ... at ! ;) As you can see from the responses here no one ... some dont. I wouldnt lose sleep over it.
Your ... -
Post your computer stupiditiesI used to check this site out quite a lot [url]http://www.rinkworks.com/stupid/[/url] but it doesnt get updated much. So i was wondering what stu…
... Raleigh, North Carolina - where $EMPLOYER[0] developed point-of-sale software ... working 100+ hour weeks. We did have some support from the developers ... other customers.
Doing 100 hour weeks, writing C++, is ... -
Programming Books for Kids - Whats happened to programming?What has happened to Programming in the 00's :( I remember at the tender age of 9 exitedly going to my library to get one of them colourfull program…
Just wrote my first useful working Speccy BASIC program in years...A nice UK National Lottery number generator. And not just any lotto number generator either. This one generates 8 lines of 6 numbers without replace…
... /> 90 LET c=1
100 LET numbersleft=49
105 ... is the number hat (array) from which we pick the numbers ...+2 grey PSU capacitor changeHi I opened up a +2 grey power supply (2.1A max output) unit in order to replace the aged electrolytic capacitor inside, just like I always do with …
... peaks of the output from the rectifier. This is ... rectifier off 50Hz mains - or 0.01 seconds.
V=IR => 9 = 0.75 * R, or R = 9 / 0. ... br /> Vripple = (9 / (12 * 0.0047)) * 0.01
Or 1 ... if the output voltage from the rectifier under load ...Fuse for Mac OS X beta releasesA beta version of Fuse for Mac OS X has been released at the dedicated sourceforge project: [url]http://sourceforge.net/projects/fuse-for-macosx/[/u…
... Changes since last official release 0.9.0.2:
[list]< ... [*] Merge in changes from upstream Fuse release 0.10.0-pre1
[list ... Philip Kendall).
[*] Reading from the 128K's memory control ... Emulate C, H and P/V flags on repeated IO instructions ...Spectrums on the TV and/or in movies?Hi, I've seen a number of threads on these forums about Spectrum sound being used on TV, but does anyone know of any films or TV programmes that act…
... ]http://www.youtube.com/watch?v=yObk06-EeUg[/url]
Marek ... is some...... machine.
Time 0:42.
It could be ... />
Well, that's all from me on this subject.
Random access, file sizes and more.A few days ago Aowen mentioned that random access to saved data is not a problem. Here are my thoughts, doubts and suggestions regarding this subject…
... projects. The new stdio is 100% machine code, as is much ... graphics routines that is callable from basic:
[url]http ... .net/almacen/tcyr/SUVLEIR-1.0.zip[/url]
[quote ... video playback will also benefit from this, and not just digitized ...I got a daughter last night!Hello Spectrum friends! I just wanted to tell you that I got a little daughter last night and that I am very happy! We barely made it to the hospita…
... standard-v.
[QUOTE=Pilsener;319174]Since you're from Sweden ... seems to be around 90-100 years. I do not know ...A List Of Zx Spectrum Music EditorsWell, not for me actually, as 99,99% of them are for AY, covox and GS cards but several times some people asked about music editors for ZX Spectrum. …
... also can import music from most of ZX Spectrum ... and learn some tricks from it. It also has ... ) and construct whole composition from them (you can specify ... ... in cells. Select first cell and press 0. You'll see ... placed pattern with number 0 to start of the ...A scrolling starfield - help needed!I have been messing on my speccy again recently and tried to do a scrolling (parallax - maybe) starfield. I know how to scroll using machine code but…
... with b=100.
I'm using SPIN 0.62 (Not ... the Internet. (I got it from a generic Z80 website).
from the same website - but the ...A scrolling starfield - help needed!I have been messing on my speccy again recently and tried to do a scrolling (parallax - maybe) starfield. I know how to scroll using machine code but…
... sure I can sort something from this lot! Great support ... br />
NUMSTARS EQU 100
SEED EQU 5
LD C,0
STARLOOP1
LD C,0
STARLOOP3
0-7 to get correct star ...Abadia del crimen laThanks to someone voting the score 1 for other games such as manic miner , skool daze , head over heels etc , the Adadia game has finally made it to …
... reasonable one, such as 7.0 and keep the voting locked ... remove this game from being displayed on the top-100 list at ...
