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  • writing an emulator-newbie needs helpHi, this is my first post here. I decided to write a minimalistic emulator of ZX Spectrum-no emulation of advanced peripherals, no emulation of sound…

    ... of DAA tests) and 76 (HALT), but I don't really ... implementation is correct. As for HALT instruction, I simply don't ...
    rich_chandler rich_chandler August 2011 Emulators
  • 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; …

    ... enabled):

    [code]
    halt
    di
    dec sp ...
    Alcoholics Anonymous Alcoholics Anonymous August 2011 Development
  • 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; …

    ... that I'd need a HALT so that I could be ...
    Battle Bunny Battle Bunny August 2011 Development
  • I am currently watching.....This stems from a rant Mel did months ago on the currently listening to thread, and he suggested starting a thread like this to somebody (sorry can't…

    ... and come to a dead halt in some cases.
    mile mile August 2011 Chit chat
  • writing an emulator-newbie needs helpHi, this is my first post here. I decided to write a minimalistic emulator of ZX Spectrum-no emulation of advanced peripherals, no emulation of sound…

    ... Atic Atac a series of HALT instructions is performed until I ...
    PeterP PeterP August 2011 Emulators
  • writing an emulator-newbie needs helpHi, this is my first post here. I decided to write a minimalistic emulator of ZX Spectrum-no emulation of advanced peripherals, no emulation of sound…

    ... Atic Atac a series of HALT instructions is performed until I ...
    Arjun Arjun August 2011 Emulators
  • writing an emulator-newbie needs helpHi, this is my first post here. I decided to write a minimalistic emulator of ZX Spectrum-no emulation of advanced peripherals, no emulation of sound…

    Yes, I redraw screen once every 69888 T-states. Isn't that the right thing to do?

    I'm trying to eliminate potential causes and so:

    - it can't be display_screen() routine, otherwise at least one game I tested would display garbage ...
    PeterP PeterP August 2011 Emulators
  • writing an emulator-newbie needs helpHi, this is my first post here. I decided to write a minimalistic emulator of ZX Spectrum-no emulation of advanced peripherals, no emulation of sound…

    ... had interrupts disabled and a HALT instruction was executed, then the ... right in assuming that your HALT emulation simply increments T_states by ...
    kphair kphair August 2011 Emulators
  • writing an emulator-newbie needs helpHi, this is my first post here. I decided to write a minimalistic emulator of ZX Spectrum-no emulation of advanced peripherals, no emulation of sound…

    ... right in assuming that your HALT emulation simply increments T_states by ...
    PeterP PeterP August 2011 Emulators
  • BEEPER Demo: "9 CHANNELS" (ZX48)Hi my friends. Another year, another demo for Spectrum 48K. :) This time - "9 channels" demo, for BEEPER fans. [url]http://pouet.net/prod.php?wh…

    ... game in place of a HALT after the main loop has ...
    BloodBaz BloodBaz September 2011 Brand new software
  • Inlay Project DiscussionAll, It's time this project was actually started in anger. The aim of this thread is to find out what every wants from it and the standards that sh…

    ... will swiftly grind to a halt, as I can't take ...
    mheide mheide September 2011 Support files
  • Inlay Project DiscussionAll, It's time this project was actually started in anger. The aim of this thread is to find out what every wants from it and the standards that sh…

    ... will swiftly grind to a halt, as I can't take ...
    richl richl September 2011 Support files
  • writing an emulator-newbie needs helpHi, this is my first post here. I decided to write a minimalistic emulator of ZX Spectrum-no emulation of advanced peripherals, no emulation of sound…

    ... if PC points to HALT instruction and, in such ... CURRENTLY PC does point to HALT, it gets incremented by ... a byte past a HALT instruction which was just ... now it also prevents HALT from going on forever, ... but always skips a HALT that could occur immediately after ...
    PeterP PeterP September 2011 Emulators
  • writing an emulator-newbie needs helpHi, this is my first post here. I decided to write a minimalistic emulator of ZX Spectrum-no emulation of advanced peripherals, no emulation of sound…

    ... check if PC points to HALT instruction[/quote]

    No ...
    Philip Kendall Philip Kendall September 2011 Emulators
  • writing an emulator-newbie needs helpHi, this is my first post here. I decided to write a minimalistic emulator of ZX Spectrum-no emulation of advanced peripherals, no emulation of sound…

    [QUOTE]
    It's very easy to write to ROM - I can do it right now, with (as you stated) a simple LD (HL),n opcode with HL set to
    PeterP PeterP September 2011 Emulators
  • writing an emulator-newbie needs helpHi, this is my first post here. I decided to write a minimalistic emulator of ZX Spectrum-no emulation of advanced peripherals, no emulation of sound…

    ... /> [quote] if there is a HALT instruction immediately after return from ... /> Obviously you would execute the HALT. What else could a z80 ...
    Dunny Dunny September 2011 Emulators
  • if you liked the bomb question, here's another one for you...which is worse ? You're in a car, travelling at 50mph, and have a head on collision with another car going in the opposite direction, at the same sp…

    ... 't come to an instant halt, they'll deflect off each ...
    Winston Winston October 2011 Chit chat
  • Fastest way to mirror a byte?I.E. turning 01100000 into 00000110, in assembly. I'm trying but I suck at stuff with rotation and the carry bit. Any pointers?

    ... with BC',DE',HL'.
    HALT Halt computer and wait for interrupt ...
    Ralf Ralf October 2011 Development
  • 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…

    ... (but you can't use HALT command then)

    -write ...
    Ralf Ralf October 2011 Development
  • Fastest way to mirror a byte?I.E. turning 01100000 into 00000110, in assembly. I'm trying but I suck at stuff with rotation and the carry bit. Any pointers?

    ... /> jr c,loop

    halt

    defs (-$)%256 ; 256 ...
    obo obo October 2011 Development
  • Artist RequiredAs some of you may be aware, at the homebrew coding weekend back in July I volunteered to write a Spectrum game to be shown at this year's Replay exh…

    I've got the loading screen, title/menu screen (and a Game Over screen, if required) covered. I'm stuck for more sprites at the moment, so we could call a halt on any new ones?
    redballoon redballoon October 2011 Development
  • Artist RequiredAs some of you may be aware, at the homebrew coding weekend back in July I volunteered to write a Spectrum game to be shown at this year's Replay exh…

    ... , so we could call a halt on any new ones?[/QUOTE ...
    jonathan jonathan October 2011 Development
  • Super Stick ManBeen thinking about doing a weird platformer for a while now, but since I have zero programming knowledge, and a modicum of drawing skills, I thought…

    ... on, then come to a halt at the other platform.
    TechnicianSi TechnicianSi November 2011 New game ideas
  • AGD 2.6 WoesThis was originally in the New Game Ideas section but thought this would be the best place to post this: I'm no programmer, hence i'm using the exce…

    ... on, then come to a halt at the other higher/lower ...
    BiNMaN BiNMaN November 2011 Development
  • Up/Down Left/Right scrollCan anybody give a newbie some pointer to simple one char scrolling by pixel? I've looked at a lot of resources, but as you can imagine, it's all a …

    ... /> ld a,0
    face_loop0 halt
    push af
    add ... tell you when.
    face_loop0 halt
    ;when you know about ...
    Turkwel Turkwel November 2011 Development
  • Repairing a faulty 48K issue 2.I am investigating one of a pair of non-working issue 2 48K Spectrums that have been sitting in a cupboard untouched for quite a few years. I haven…

    ... will just get confused and HALT probably.

    [i]Don ...
    Spirantho Spirantho November 2011 Hardware
  • What paging scheme is the "standard" for 128K models?Sinclair implemented an arrangement so that even numbered pages are non-contended, and odd numbered pages are contended (quoting from memory, haven't…

    ... /> [code] org 32768
    loop: halt
    xor a
    out ...
    mcleod_ideafix mcleod_ideafix November 2011 Hardware
  • What paging scheme is the "standard" for 128K models?Sinclair implemented an arrangement so that even numbered pages are non-contended, and odd numbered pages are contended (quoting from memory, haven't…

    ... 2
    ei
    Forever halt
    jp Forever
    ret ...
    mcleod_ideafix mcleod_ideafix December 2011 Hardware
  • Which Speccy game had best border effectsIn truth, I'm just trying to remember a game from my youth, and the amazing border effect during pause is the only thing I can clearly recall about i…

    ... if you can use a HALT to wait for it.
    HALT, that works like a lot ...
    joefish joefish December 2011 Games
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