-
SAVEing without waiting for keypresshello, here's question for y'all. is there a way in BASIC to bypass the "Start tape, then press any key" prompt when SAVEing an array? sorry if it'…
... out the first 1,000 bytes of the ROM.
DI ; 32616 243 disable maskable interrupt
JP $04FE ... -
Proportional Print Routine...Hi Folks, Does anyone know of a good proportional printing routine for the ZX Spectrum? Ideally I am looking for something that prints with charact…
... There was a convenient 15 bytes spare between the end of ... able to save another 14 bytes by moving the PropSys ... gap, leaving about 10 bytes again between the end of ... POKEs below:
[code]
Disable
XOR A ; 64059 175 ... -
Proportional Print Routine...Hi Folks, Does anyone know of a good proportional printing routine for the ZX Spectrum? Ideally I am looking for something that prints with charact…
... the linewrap CODE block 246 bytes.
Options in the demo ... Z, cpatch ; 63876 40 1 disable if parameter=0
ADD ... /> justno: XOR A ; 63883 175 Disable right justification
JP nonspc ... -
Serial protocol, help!Hi, simply trying to find best way to transfer programs from PC to real ZX Spectrum for testing purposes. Under Windows I tried using Spxfr and it w…
... t-states
di ; disable interrupts
;; clear to ... byte. If I read 32 bytes per interrupts using bit banging ... use internal buffer of 16 bytes. they flush it after receiver ... wrong. A buffer of 20 bytes is needed for reliable transfers ... -
Serial protocol, help!Hi, simply trying to find best way to transfer programs from PC to real ZX Spectrum for testing purposes. Under Windows I tried using Spxfr and it w…
... buffer (from 1 to 16 bytes if available)
;; ------------------------------------------------------------
_rs232_read ... return address
di ; disable interrupts
;; clear to ... -
Why doesn't my routine work?I have a "level" defined by 504 bytes (28 squares across x 18 squares down) I'm trying to write a routine that will take an X,Y coordinate in pixels…
... user-written program must
; disable interrupts to make use of ... ,($5C78) ; Fetch the first two bytes at FRAMES1.
INC HL ... ; Increment lowest two bytes of counter.
LD ($5C78 ... -
Saving and Loading from tape in MC?I'm actually having problems with saving and loading from the ROM routines for the interpreter... I'm currently using the following codes for saving…
... br /> [code]
;; LD-BYTES
L0556: INC D ; reset ... .
DI ; disable interrupts
LD ... br />
DI ; disable interrupts
LD ... -
Move objectHi again, I am using paper colors to represent game objects. I have a "paddle" that is 4 pixels wide. I save its position as a 2 byte word in memory…
... /> org 33000
di ; disable interrupts
ld a ... , 12 ; length of string in bytes
call 8252 ; print ... -
Move objectHi again, I am using paper colors to represent game objects. I have a "paddle" that is 4 pixels wide. I save its position as a 2 byte word in memory…
... /> org 33000
di ; disable interrupts
ld a ... , 12 ; length of string in bytes
call 8252 ; print ... -
Challenge Sprint 4x tape recorderHi, I noticed a [url="http://www.worldofspectrum.org/infoseekid.cgi?id=1000051"]Challenge Sprint[/url] on eBay, and checked out the WoS entry for it…
... possible. The unit has the "disable switch" (a 5 GBP add ... ) that let the user to disable the Sprint ROM without having ... left corner go to the disable switch. When the switch is ... if the same block of bytes were repeating again and again ... -
Gigascreen - programming guideDoes anyone know of a programming guide for the 128K gigascreen screen mode, specifically a persistence colours table, some code (pref. C level or BA…
... modification). Gigascreen can be enable/disable on port #EFF7. Hardware ... SCR with length 2x6912(13824) bytes in 100% compatible method with ... screen lines switching). First 6912 bytes from file load to first ... adress 16384 and second 6912 bytes to zx128 ram page ... -
The zxodus engineI've been playing around with this for a couple of days now. Its one of the best things I've seen for sinclair basic, and I've seen nothing about it …
... disable it, RANDOMIZE USR 52039
- Tilemap is at 52363 (81 bytes ... - Tileset is at 53212 (4096 bytes)
- Font is at 52444 ... conversion (will generate a 4096 bytes binary), or nothing for ... conversion (will generate a 16384 bytes binary).
I ... -
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…
... as they are able to disable interrupts of devices sitting behind ... , we are talking about 20 bytes here. But you have to ... couldn't fit into 512 bytes, you doubled your RAM costs ... -
RFC: 64 column font codeIn BASIC, type CLEAR 49999 then import the code at 50000. Then type RANDOMIZE USR 50000. This will create a new channel and attach stream #4 to it. A…
... channel #4 does not automatically disable it afterwards, since it cannot ... you will have to explicitly disable it yourself, for instance:
bytes in the core routine (without ... it's now only 494 bytes long. Since the complete source ... -
Fairlight's use of LDIRYS, comparing Fairlight and Nightshade, said: [quote]Fairlight is much more interesting even though the techniques that Bo Jangeborg uses for screen…
... />
switch_on:
di ; disable interrupts
push af ... /> push hl ; write 16 bytes
push de
... incbin "unionflag.bmp" ; 6144 bytes of in order bitmap
incbin "unionflag.atr" ; 768 bytes of attributes
... -
Another custom loaderI got into my hands a cassette with compilation of Polish programs. most of them MIA. Unfortunately some of them are saved with a kind of custom loa…
... from a micro (you should disable all the other inputs) or ... "special" block should be 48368 bytes long, maybe with 2 more ... -
joining lines of BASICDue to overwhelming demand - well, one demand - well, more of a suggestion, really - here's a routine to join together lines of BASIC. The vertical c…
... longer now (220 lines, 323 bytes), unaccountably named [url=http://www ... 65144 to enable, 65154 to disable.
Use the "" key ... -
A z88dk + sp1 demo (with source)Since nowadays people are still wondering about how difficult it is to make something in z88dk, I thought I just put a very simple demo to show how e…
[QUOTE=Timmy;594378]Since nowadays people are still wondering about how difficult it is to make something in z88dk, I thought I just put a very simple demo to show how easy it actually is. (Actually I've already published this one some time ago, but this ... -
Maritrini and Cray 5 loading problemsHas anyone else here had issues loading either of these on a 128k? No matter what I try, both these games refuse to load properly. I can get both t…
... you (well, Benway) don't disable interrupts while switching pages. It ... /> A slighly simplified code (32 bytes, I think):
[code ... -
A new multicolor engine called BIFROST*I'm glad to announce the release of a new multicolor engine implemented by yours truly, including high quality 16x16 tiles designed by R-Tape: [IMG]…
... for non conversational adventures, 640 bytes should be enough... (oh, wait ... , programs using BIFROST* would better disable it and let BIFROST* control ... -
Byte-order backbufferThis is a tool for Z80 coders who wish the Spectrum screen had a serial layout. It runs as an interrupt mode 2 service routine and uses POP and PUSH …
... />
switch_on:
di ; disable interrupts
push af ... /> push hl ; write 16 bytes
push de
... /> incbin "screen.bmp" ; 6144 bytes of in order bitmap
incbin "screen.atr" ; 768 bytes of attributes
org ... -
Screen routinesHello. For my games I?m using the sprites routine method of a screen buffer and when I finish to print all the sprites I dump all the buffer in the …
... line of the screen in bytes, using LDI, but at ... can think of, is to disable interrupts and use the stack ... . Although LDI is two bytes and ADD HL,SP is ... copy a row starting 3 bytes into it, then before ... and copy the remaining 3 bytes.
Remember one ... -
SPECTRA New from Paul FarrowLooks good! Read about it [URL="http://www.fruitcake.plus.com/Sinclair/Spectrum/Spectra/SpectraInterface.htm"]here[/URL]
... don't suppose another 64 bytes would make a huge difference ... ;646993]Is it possible to disable the I/O reads on ... -
Tutorial - learn machine code in 30mins[B][I]Message from the moderators[/I] - bigjon has requested that readers' attention be drawn to a better version of this tutorial, one which is easi…
... Spectrum Manual.
Some instruction bytes, like 201 for 'ret', ... /> Some instruction bytes need one or two bytes of data afterwards ... do.
Some instruction bytes need a further instruction ... the keyboard is 'di' = 'disable interrupts. Its opposite is 'ei ... -
Machine code RST10 problemHello! After 27 years of playing with Spectrums I'm starting to look into doing assembly language properly. All went swimmingly well until I wrote …
... would corrupt that with a "Bytes: ..." message.[/QUOTE]
Use ... ]POKE 23739,111[/B] to disable screen messages.
After ... -
Machine code RST10 problemHello! After 27 years of playing with Spectrums I'm starting to look into doing assembly language properly. All went swimmingly well until I wrote …
... ]POKE 23739,111[/B] to disable screen messages.[/QUOTE]
bytes longer than the one that ... -
The new Superfo cloneHi In the spanish forum speccy.org some guys and me have optimized the superfo clon to have less ICs. The actual design has 39 ICs versus the 45 ICs…
... [QUOTE=velesoft]
- add possibility disable kempston port (collision with some ... sense to keep these bytes after shut down and ... br /> - add jumper for disable rewriting rom (disconnect /WR ... PS/2 microcontroller), and enable/disable /WAIT when you push ... -
Code execution logging/profilingAs revealed in [url="http://www.worldofspectrum.org/forums/showthread.php?t=41666"]this thread[/url], I'm adding support for reading code execution l…
... reduces the reported number of bytes of non-code misidentified as ... 6013 to 445. These 445 bytes are an artifact of the ... the map file. When I disable that static analysis, the reported ... -
SPECTRA New from Paul FarrowLooks good! Read about it [URL="http://www.fruitcake.plus.com/Sinclair/Spectrum/Spectra/SpectraInterface.htm"]here[/URL]
... on its expansion bus and disable its own internal memory if ... -interpret the 8 bit attribute bytes read in such that 6 ... addresses for the two attribute bytes for a cell differs only ... and timing of fetching attribute bytes from memory remains the same ...
