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Machine code routine neededHello! Please i'm looking for a short routine that can write the same value in a range of continous memory locations. For example, to write 255 val…
... ]
org 32768
di ; disable interrupts
ld (savesp+1 ... a,100 ; 100 times 2 bytes
ld hl,$ffff ; write ... -
What are editor scratchpads?I've been reading and experimenting with 128 bank switching and using the shadow screen. The technical reference [url="https://worldofspectrum.or…
... the disk drive. Also, some bytes in page 7 are altered ... your own interrupt routine (or disable interrupts), you may use the ... a minefield, the first 6912 bytes (=the second screen) are "safe ... -
Dynamite Dan II - Island 6 - HELP!Hi all, can someone possibly create a snapshot of Island 6 (car park island) on Dynamite Dan II for me please? I'm trying to work out why half the…
... filled up with the wrong bytes.
So solution to get ... AY). Or from 128 program, disable the 128 paging and write ... Loader.
Code to disable paging and clear printer buffer ... ]
res 4,(iy+1) ; disable 128k paging
ld hl ... -
If you had four roms...Just wondering if you were designing a Spectrum from scratch, and you used a 27512 EPROM, which would hold about 4 spectrum roms, what you would inst…
... ZX Spectrum BASIC ROM (16k bytes) and the diagnostic test ROM ... Spectrum 16k/48k/+ (*) machine 80k bytes of RAM. It uses a ... the change would have to disable interrupts and be running from ... -
how can we load +3dos files in assembly?is there some way to load +3dos files in assembly, like calling bios routines somewhere? (like defining in registers the filename string address in m…
... contains the SCREEN$ (first 6912 bytes) and then the code (another ... 36790 bytes) of Mad Mix Game. Then ... file pointer has advanced 6912 bytes, so no need to use ... , you must use dos_set_1346 to disable disk caching. Disk caching (by ... -
New release of ZEsarUXFound today by chance on: [url]https://github.com/chernandezba/zesarux/releases/tag/10.1-13122021[/url] [quote]ZEsarUX-10.1 Beta1 Pre-release che…
... mdv files of size 174930 bytes
Added action to trigger ... mode
-added setting to disable Flash
Improved ZX ... any file size of 6912 bytes is guessed as Spectrum screen ... /> -ZX Desktop: added setting to disable ZX Desktop when going to ... -
New release of ZEsarUXFound today by chance on: [url]https://github.com/chernandezba/zesarux/releases/tag/10.1-13122021[/url] [quote]ZEsarUX-10.1 Beta1 Pre-release che…
... mdv files of size 174930 bytes
Added Jupiter Ace TAP ... mode
-Added setting to disable Flash
Improved ZX ... : any file size of 6912 bytes
-Show when a menu ... /> -ZX Desktop: added setting to disable ZX Desktop when going to ... -
How to disable the "scroll?" message?Hello. I'm a beginner Z80 assembly programmer and I decided to make a ZX Spectrum game to practice my skills and gain some more experience. I curr…
... [code]
cls:
di ;disable interrupt
ld (.stack+1 ... four push instruction stores 8 bytes on stack
push ... four push instruction stores 8 bytes on stack
push ... four push instruction stores 8 bytes on stack
... -
How to disable the "scroll?" message?Hello. I'm a beginner Z80 assembly programmer and I decided to make a ZX Spectrum game to practice my skills and gain some more experience. I curr…
...
cls:
di ;disable interrupt
ld (.stack+1 ... four push instruction stores 8 bytes on stack
push ... four push instruction stores 8 bytes on stack
push ... four push instruction stores 8 bytes on stack
push ... -
How to disable the "scroll?" message?Hello. I'm a beginner Z80 assembly programmer and I decided to make a ZX Spectrum game to practice my skills and gain some more experience. I curr…
... /> ; de = pointer to 8 bytes graphic data
; b = ...
; copy 8 bytes to both buffers. this trashes ... /> ; de = pointer to 32 bytes graphic data. MUST BE ALIGN ... br /> cls:
di ;disable interrupt
ld (.stack+ ... -
How to disable the "scroll?" message?Hello. I'm a beginner Z80 assembly programmer and I decided to make a ZX Spectrum game to practice my skills and gain some more experience. I curr…
... /> ; de = pointer to 8 bytes graphic data
; b = ...
; copy 8 bytes to both buffers. this trashes ... /> ; de = pointer to 32 bytes graphic data. MUST BE ALIGN ... br /> cls:
di ;disable interrupt
ld (.stack+ ... -
How to disable the "scroll?" message?Hello. I'm a beginner Z80 assembly programmer and I decided to make a ZX Spectrum game to practice my skills and gain some more experience. I curr…
...
; copy 8 bytes to both buffers. this trashes ... /> ; de = pointer to 32 bytes graphic data. MUST BE ALIGN ... br /> cls:
di ;disable interrupt
ld (.stack+ ... coll_map BLOCK 24*24 ; 24x24 bytes for the collision
... -
How to disable the "scroll?" message?Hello. I'm a beginner Z80 assembly programmer and I decided to make a ZX Spectrum game to practice my skills and gain some more experience. I curr…
...
cls:
di ;disable interrupt
ld (.stack+1 ... four push instruction stores 8 bytes on stack
push ... four push instruction stores 8 bytes on stack
push ... four push instruction stores 8 bytes on stack
push ... -
How to disable the "scroll?" message?Hello. I'm a beginner Z80 assembly programmer and I decided to make a ZX Spectrum game to practice my skills and gain some more experience. I curr…
...
cls:
di ;disable interrupt
ld (.stack+1 ... four push instruction stores 8 bytes on stack
push ... four push instruction stores 8 bytes on stack
push ... four push instruction stores 8 bytes on stack
push ... -
How to disable the "scroll?" message?Hello. I'm a beginner Z80 assembly programmer and I decided to make a ZX Spectrum game to practice my skills and gain some more experience. I curr…
...
cls:
di ;disable interrupt
ld (.stack+1 ... four push instruction stores 8 bytes on stack
push ... four push instruction stores 8 bytes on stack
push ... four push instruction stores 8 bytes on stack
push ... -
How to disable the "scroll?" message?Hello. I'm a beginner Z80 assembly programmer and I decided to make a ZX Spectrum game to practice my skills and gain some more experience. I curr…
...
; copy 8 bytes to both buffers. this trashes ... /> ; de = pointer to 32 bytes graphic data. MUST BE ALIGN ... br /> cls:
di ;disable interrupt
ld (.stack+ ... coll_map BLOCK 24*24 ; 24x24 bytes for the collision
... -
Robospec (new project, hopefully useful as a tutorial as well)Starting a new project after my graphics investigations. * It's gonna be a Robotron clone since that's not too ambitious (although I'd like to hav…
...
cls:
di ;disable interrupt
ld (.stack+1 ... four push instruction stores 8 bytes on stack
push ... four push instruction stores 8 bytes on stack
push ... four push instruction stores 8 bytes on stack
push ... -
Console frameworkStill working on Specotron, but at the point where working out the diagonal lines collision is not good at beer o'clock. In the meantime I've knoc…
... some compile time switch to disable the more advanced features of ... so that would add 2 bytes to every string definition. -
SCF/CCF flags - new discoveryI can't believe that no one is interested in discussing the additional, previously undocumented internal state of the Z80 CPU I have discovered recen…
...
cls:
di ;disable interrupt
ld (.stack+1 ... four push instruction stores 8 bytes on stack
push ... four push instruction stores 8 bytes on stack
push ... four push instruction stores 8 bytes on stack
push ... -
Little problem with AYmakeWell, I'm not sure if this post may be here, but, if I'm wrong, I'm sorry. I have a little problem using aymake. I want to convert a 48k's song, w…
... . I just get a 33 bytes long file with the header ... -
AY musicThis is a format I'm proposing for an AY music player. If anyone can see any problems or anywhere it can be improved please say so. An AY music form…
...
In total 42 bytes
Finally is the ... offsets plus a final two bytes for the end of the ... -
LINE-routine and other nice pieces of codeThe line-topic came in the end with a nice piece of fast coding. I think that there might be more of these routines out there (where-ever-u-r). Isn…
... #81,#83,#82 (ETC... 255 BYTES)
org #8100
bytes.
Decision made from fetch ... -
Little problem with AYmakeI have a little problem using aymake. I want to convert a 48k's song, which needs to know the values of the registers. I know them, but I don't know…
... . I just get a 33 bytes long file with the header ... -
Loading with CODEHi all! I last played speccy games back in '91. that's when it died IMHO. It's good to see people are keeping the dream alive with emulators and util…
... LOAD "" you obtain a scrolling "bytes" message. ISTR that some games ...
