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<1234567…34>
  • Spectrum games which are better than 16-bit versionsLet's talk about games which are better on the Speccy than on 16-bit machines. In my opinion Spectrum versions of "Chase HQ" and "Space Gun" are bet…

    Let's talk about games which are better on the Speccy than on 16-bit machines.
    In my opinion Spectrum versions of "Chase HQ" and "Space Gun" are better than Amiga versions.
    PopoCop PopoCop March 2006 Games
  • 16-bit WarsDoing a 8-bit war is a bit of a no-brainer but what's your 16-bit fave, Multiple votes are allowed

    Doing a 8-bit war is a bit of a no-brainer
    but what's your 16-bit fave, Multiple votes are allowed
    chop983 chop983 April 2007 Chit chat
  • 8-bit or 16-bit registers?I'm playing around with writing a Speccy emulator for mobile Java at the moment. I did a quick and dirty port of Qaop, which does run but at less tha…

    ... be done either as 8-bit or 16-bit, with conversions where required ... can obviously be left as 16-bit, but what about the others ... ? Will more 8-bit operations be performed than 16-bit? Any suggestions?
    bigredswitch bigredswitch June 2007 Emulators
  • 16-Bit Binary MathsHi, I'm trying to figure a few things out regarding 16-bit maths (SBC HL, ss in particular). regHL is an UInt16 (unsigned 16-bit integer) in my emu…

    ... a few things out regarding 16-bit maths (SBC HL, ss in ... /> regHL is an UInt16 (unsigned 16-bit integer) in my emulator. I ... them figured out for 8-bit calculations.

    Rodney Zaks ... how this would work with 16-bit numbers though. Any suggestions?
    MadDoc MadDoc July 2008 Emulators
  • What 80's games inspired the 8/16-bit sequence in Atlantis SquarePantis (the movie) ?So, I just caught a glimpse of SpongeBob SquarePants (the Atlantis SquarePantis movie with David Bowie, [B][I]NOT[/I] the game based on the movie[/B]…

    ... , it does look very 8/16-bit generic)

    ???

    ZnorXman ZnorXman October 2011 Chit chat
  • What if Sinclair had released a 16 bit Spectrum?Had Sir Clive not wasted his companies money on the white elephant that was the C5 and instead focused on competing with his rival computer manufactu…

    ... , how well would a Sinclair 16-bit Spectrum have fared?

    16-bit version given the ST and ...
    Nick Nick July 2014 Games
  • Ports of 16 bit gamesI was watching a video for the Speccy version of Turbo Outrun where the guy who posted the video said that whilst he didn't think it was as good the …

    ... it was superior to the 16 bit versions, something I disagree with ... few games ported from the 16 bits I feel that the ... pretty good conversions of the 16 bit games.

    So which ... feel fell short? And what 16 bit games would you liked to ...
    RonnieASA RonnieASA August 2014 Games
  • Looking at 16 bit screenshots as a speccy ownerHow did you feel when you looked at screenshots of 16 bit games as a speccy owner? I used to think how good it must be to own such a machine and get…

    How did you feel when you looked at screenshots of 16 bit games as a speccy owner?

    I used to think how good it must be to own such a machine and get those colored sprites etc.
    kinda crazy really
    slenkar slenkar November 2014 Sinclair Miscellaneous
  • What Spectrum games compare favourably with the 16 bit versions?Obviously Out Run is not one of them ;) But I'm interested in the late 80s period again when a lot of Spectrum games were sadly afterthought cash-…

    ... played well compared with their 16-bit equivalents?
    Spector Spector November 2018 Games
  • Howto paint a squared zone of the screen ?You know what guys ? i begin to love this languaje. Cant understand why not put more effort on the 80's to learn it :( because it is really speedy. …

    ... , you only can return 16-bit number from machine code. However, ... the number can be an address ... the string using a number of PEEKs. However, ... number
    ret[/code]

    and call it using PRINT ... THEN STOP
    40 PRINT CHR$ c;
    50 ...
    Shiru Shiru June 2010 Sinclair Basic
  • Print TextHow do i print text on the bottom left row(memory location in attribute 23295) of the screen in assembly? I understand the parts better on paper and …

    ... force method of converting a 16 bit number into a 5 character text ... Enter with HL holding the number. Has the advantage that it ... want to print leading zeros then check the number after you ... 've converted it and print from ...
    Turkwel Turkwel June 2011 Development
  • Where to start?..Hello, First off, sorry if this is in the wrong and sorry if the questions I'm about to ask have been asked and answered numerous time! Little back…

    ... in bytes, the codes, the number of clock ticks they take ... up some moolah and just print out that info for my ... bytes of data; typically a 16-bit number, with the low byte first ... is treated as a signed number from -128 to +127.[/QUOTE ...
    ZnorXman ZnorXman September 2011 Development
  • A quick newbish questionI'm reading through 'mastering machine code on your spectrum',as kindly posted by Mr bert on this forum. Correct me if I'm wrong from what i read,bu…

    ... between RANDOMIZE USR 32768 and print usr 32768?.[/QUOTE]

    PRINT, it shows that number on screen.

    What number? USR ... routine, and returns the number of register BC (16-bit number) when the routine ...
    Timmy Timmy March 2013 Development
  • Where does the BASIC program sit 48K Spectrum memory?Hi there First post so be gentle, I've had a spectrum since the 80's and have recently started programming it for fun again. I wrote the followin…

    ... ROM routine that does a PRINT or a LET or a ... is not down to a bit of software - it is etched ... 8-bit number). But combined, it can treat HL as a 16-bit number that ... ) and POKE it with a number from 175 up to 247 ...
    joefish joefish September 2016 Sinclair Basic
  • Fast division in machine codeHi Does anyone know what is the fastest way to divide a 16 bit number by 24 in machine code. Derek [ This Message was edited by: dmsmith on 2004-0…

    Hi

    Does anyone know what is the fastest way to divide a 16 bit number by 24 in machine code.

    Derek

    [ This Message was edited by: dmsmith on 2004-09-24 20:04 ]
    dmsmith dmsmith September 2004 Development
  • More on Randomize commandI always used to use randomize xxxxx then peek 23670 and 23671 to turn a 16 bit number into 2 8 bit numbers but only noticed yesterday that randomize…

    I always used to use randomize xxxxx then peek 23670 and 23671 to turn a 16 bit number into 2 8 bit numbers but only noticed yesterday that randomize 0 appears to do nothing. anyone know if this does anything?
    nuggetreggae nuggetreggae December 2009 Sinclair Basic
  • Math Quiz - MultiplicationThe topic is fast multiplication routines, from 8x8 to 32x32 and all points in between. These functions sit underneath floating point libraries, gen…

    ... up is multiplying a 16-bit number by an 8-bit, result in 24 ... tests whether the 16-bit number is in fact 8-bit and if it ... if the LSB of the 16-bit number is zero and if it ... up is a 16-bit by 16-bit multiply into a 32-bit result.
    Alcoholics Anonymous Alcoholics Anonymous January 2014 Development
  • undocumented Z80I am documenting a feature nobody has done before and no emulator gets right at this time. I'll have a report after doing some more tests. Fraser.

    ... depends upon the last 16 bit arithmetic instruction used.
    number of the last 16 bit addition/subtraction. ... high byte of the last 16 bit number decremented/incremented.

    16 bit arithmetic?

    ...
    Fraser Fraser September 2002 Emulators
  • I would like to write emulatorHi guys, I'm new to this forum but I realise that you must get loads of posts from people asking "how do I write an emulator" so I'll try and be spe…

    ... increase the value of the 16-bit number formed from a combination of ... /> Now, I think that this 16-bit value is calculated by multiplying ... that when combined into a 16-bit number then form 12811 correct?
    MadDoc MadDoc September 2004 Development
  • I would like to write emulatorHi guys, I'm new to this forum but I realise that you must get loads of posts from people asking "how do I write an emulator" so I'll try and be spe…

    ... ]Now, I think that this 16-bit value is calculated by multiplying ... that when combined into a 16-bit number then form 12811 correct?[/quote ... and low part of the number you already have - it is ...
    cyborg cyborg September 2004 Development
  • Programming MC challengeIn the 80-ies I got the following assignment for a programming course. 2 16-bit values stored in #8000 and #8002 must be added together and stored i…

    ... 16 bit number
    ; $8002/8003 second 16 bit number
    ;OUT
    ;$8000 and $8002 16 bit ... sum doesn't fit in 16 bit then the value zero must ...
    rtunes rtunes August 2005 Development
  • The Only Reason Sinclair Succeeded (Provoking Controversy)Although I love my Sinclairs dearly, I think that the only reason they succeeded was because at the time most people did not know any better (factori…

    ... fair, the Z80 can handle 16 bit number internally and the 6502 only ... you can still deal with 16 bit number faster using multiple instructions on ... and the C64's requires 16 bit numbers. The Speccy uses 1 ... / pixel or 4 times the number of bits!
    Using ...
    JamesD JamesD September 2006 Sinclair Miscellaneous
  • The Only Reason Sinclair Succeeded (Provoking Controversy)Although I love my Sinclairs dearly, I think that the only reason they succeeded was because at the time most people did not know any better (factori…

    ... fair, the Z80 can handle 16 bit number internally and the 6502 only ... you can still deal with 16 bit number faster using multiple instructions on ... and the C64's requires 16 bit numbers. The Speccy uses 1 ... / pixel or 4 times the number of bits!
    Using ...
    Spector Spector September 2006 Sinclair Miscellaneous
  • The Only Reason Sinclair Succeeded (Provoking Controversy)Although I love my Sinclairs dearly, I think that the only reason they succeeded was because at the time most people did not know any better (factori…

    ... the Z80 can handle 16 bit number internally and the 6502 ... can still deal with 16 bit number faster using multiple instructions ... and unroll your loops a bit.

    Also ... only way of using 16-bit pointers and typically take ... and 1/2 the number of t-states, ...
    Matt_B Matt_B September 2006 Sinclair Miscellaneous
  • Minigame Compo 2007Hi there, also this year, there'll be a minigame competition, open to all 8-bit computers and consoles. It consists on writing games whose size (…

    ... first 4 bytes of such number), it is more convenient to ... .0 . In fact, every FP number starting with such three bytes ... - using some tricks - for every 16 bit number.

    I have updated ... 1.0, without counting line number and length!
    Paolo Ferraris Paolo Ferraris January 2008 Development
  • Disappearing/appearing effectI remember doing a small routine in BASIC which could be used to cover the attributes section randomly, until all 704 characters were filled with the…

    ... m-sequence[/I]. The only number left is 0 (zero). Maybe ... you.

    {update} Yes, bit 0 of the first byte ... does not "visit" the number "0" (every 16-bit number BUT!) (unless seeded as ...
    BloodBaz BloodBaz March 2008 Sinclair Basic
  • Assembler snippetsI was just thinking that a thread for small but useful assembler snippets to do useful things would be cool for people learning z80 coding. Not to me…

    ... to HL - creating a signed 16-bit number:

    [code]
    sign_extend_a_to_hl ...
    Chris Pile Chris Pile January 2009 Development
  • +3 BASIC and RST 8I've been working on adding commands to the BASIC interpreter, in a similar style to how Interface 1 does it (catch the RST 8 error trap). This works…

    ... call EXPT2_NUM, I get a 16 bit number regardless of how the BASIC ... )" all just give me the 16 bit number that's the result of ...
    Winston Winston February 2009 Development
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