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Oscilloscope Speccy ProgramHi all, I remember very well in the old days when my Speccy was my single computer (around 1992) that I have had an oscilloscope software. This uses…
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So ... I changed the routine to do the same, as ... ... it didn't, so I'm still stumped. This is starting ... , D ; 7F69 42
LD C, E ; 7F6A 4B
RET ... -
New tool: ZXBOOT.EXE[B]ASM[/B] is proud to present the first release of ZXBOOT.EXE: [url]http://www.4shared.com/file/NP-FVOSf/zxboot__beta_.html[/url] ZXBOOT is a comma…
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Um.. I'm not into 'C' librarys at all as ... passed back from a routine - who thinks this s ... br /> [/code]
I'm not that bad really - honest ... nerd) and those are C/C++, Java, Apple, Indie music ... -
Learning Assembly LanguageHow easy would it be to learn assembly language for someone who has a decent grasp of Basic? I mean how long do you think it would take before I coul…
...
; --------------------------------------------------------------------------
; Routine to wait for next video ... br /> ; 127 B N M SS SPACE
;
ld c,(ix+SPR_ypos) ; C = Y position
< ... -
Learning Assembly LanguageHow easy would it be to learn assembly language for someone who has a decent grasp of Basic? I mean how long do you think it would take before I coul…
...
; --------------------------------------------------------------------------
; Routine to wait for next video ... br /> ; 127 B N M SS SPACE
;
ld c,(ix+SPR_ypos) ; C = Y position
< ... -
Why doesn't my loop work?Can anyone help me understand why my loop doesn't work? Is it to do with how DEC HL affects the flags? [code] ; Read 32k bytes from port 191 as fa…
Just checked: IN reg,(C) sets the sign flag ... jump if positive) / JP M (jump if minus) without ... ,buf ; also overwrite trigger routine with sample data - why ... not?
LD C,port#
trig: IN ... A,(C) ; bit 7 read from ... -
ZX-mas DemoWell, I said I'd announce my seekrit project here for Christmas. however since Alarm jumped the gun in another thread[1], and It's ready early anywa…
... there is a mix of C (or another high level language ... z88dk except the jump scroll routine :)
It's just the ... .
(the jump scroll routine was coded for me by ... ASM as I'm not that great with z80 ... -
yeah - unix for zx spectrumI started a new hobby project. An operating system for ZX Spectrum. A unix clone. Talked to my friend about it and he asked me what if after I'm done…
... reduce performance. However I'm not sure if that is ... this model requires the compiler (C) to automatically insert bankswitch ... so does an interrupt service routine. They should not be duplicating ... OS with this C compiler and bootstrap C compiler (compile it ... -
Where's it all going?[Rerouted from 'Assembler Intricacies' in Development Forum] [QUOTE=Timmy;506104]I don't think we're in disagreement here. As I've said it's a niche…
... it raises standards then I'm all for it.
... without them. Not knowing the C sprite libraries (or assembler ... a great idea", "I'm going to convert this" and ... for an actual game. I'm jaded, I take all ... an actual finished game or routine and then I can see ... -
Where's it all going?[Rerouted from 'Assembler Intricacies' in Development Forum] [QUOTE=Timmy;506104]I don't think we're in disagreement here. As I've said it's a niche…
... it raises standards then I'm all for it.
m not surprised it could ... quote]
Not knowing the C sprite libraries (or assembler equivalents ...
[quote]
I'm jaded, I take all claims ... actual finished game or routine and then I can ... -
Japan Tsunami AppealAs some of you will be aware, I've been tinkering with an open source version of SE Basic that could be distributed with hardware without infringing …
... still works.
* New RENUM routine. It only accepts the first ...
B.IN E.XP M.OVE REN.UM
BO ... $ PA.PER SO.UND
C.ODE INP.UT PAL.ETTE ... -
SE Basic Type-ins^Pete suggested creating a sticky thread for SE Basic discussion. I thought a Type-ins thread might also be useful. Up to the mods if they want to ma…
... different printer. This Z80 routine replicates the old COPY ... whole screen. The whole routine takes up 90 bytes ... 0x1f54 ; break_key
jr c, copy_l_2
ld a, ... a, a
ret m
jr nc, copy_l_1< ... br /> ld c, 32
... -
Flynn's Adventure in Bombland v1I am pleased to announce the initial release of Flynn's Adventure in Bombland. You can grab it here [url=http://tomdalby.com/retro/zxspectrum/FAIBL_v…
[QUOTE=Morkin;525781]I'm feeling a bit spoiled at ... point-of-view) that I'm astounded if it's really ... I programmed in Fortran and C mainly.
For this ... actually wrote the mechanics (sprite routine, scripting etc..) for a much ... -
Copying a SCREEN$ in ZX BASIC in 1 second?!Following on from the revived "[thread=20207]Saving a complete SCREEN$ in BASIC[/thread]" thread (although Arjun really only needed a suitable POKE i…
... an updated version of FN m$() which handles string slicing in ... before:
LET d$=FN m$(a$,a,b$,b,l ... d$(a$,a,b,l,m,o)
=CHR$ (65 ... CHR$ b+CHR$ (l-256*m)+CHR$ m
5 GO ... the routine at lines 16-19.
The LET a$=c$ restores ... -
50Hurts - Full-screen 50Hz 1-pixel scrolling on a 128K Speccy50Hurts - Full-screen 50Hz 1-pixel horizontal scrolling on a 128K Speccy. Graphics are an obvious nod to Joffa, whose games and banter were a big ins…
... /> ;; this code patches the output routine
loc_A156:
ld a ... a,0 ; NOP
jr c,loc_A162
ld a,2Ch ... he used. %-)
i'm pretty sure that Cobra has ... -
Zynaps: is it handcoded?sorry if this question was already answered. but i did some inspection of Zynaps code and it seems to me that it's screen drawing (and maybe other pa…
... at it, but i'm pretty sure that my memory ... some code generated by hitech C (or, what is more ... and there (even from interrupt routine, afair), something like spagetty ... but not now: i'm busy with work and with ... engine designing (yes, i'm writting two new games, but ... -
Your Views on... GhostbustersI dusted off the Master System version of this and inspired me to try out the Speccy version. It's a good game with it's strong and weak points. I …
... you will see the LDIR routine. LDIR is slow and ... game I'm using 32 LDI instructions. The new routine starts at ... to use a new LDI routine. It then restarts the ... ADDRS
MODIFY2:
LD C,(HL)
INC HL
INC HL
LD A,C
CP $00
... -
Musician needed!An old "classic" game had a tune in it which didn't sound too good. The beeps below should give you a clue as to which program I'm talking about... […
... first byte is put into C and the second byte into ... $AF52. There is a DELAY routine at $AFA2.
[*]After every ... are like the ROM BEEPER routine. HL refers to frequency and ... to the music itself, I'm not sure it's just ... -
Your Views on... GhostbustersI dusted off the Master System version of this and inspired me to try out the Speccy version. It's a good game with it's strong and weak points. I …
... you will see the LDIR routine. LDIR is slow and ... game I'm using 32 LDI instructions. The new routine starts at ... to use a new LDI routine. It then restarts the ... ADDRS
MODIFY2:
LD C,(HL)
INC HL
INC HL
LD A,C
CP $00
... -
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…
... o-o-o ... Here I'm guessing that you didn't ... br />
The Your Sinclair routine needs an alternative compressed character ... files. Read sections (b) & (c) in "Notes on the machine ... />
The Your Spectrum routine already includes a modified character ... -
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…
... o-o-o ... Here I'm guessing that you didn't ... br />
The Your Sinclair routine needs an alternative compressed character ... files. Read sections (b) & (c) in "Notes on the machine ... />
The Your Spectrum routine already includes a modified character ... -
AY Magic version for ZX81 was bornModified Ay magic ,my previous interface for zx48. On board, ay chip based on Zonx interface but with stereo output and rampack 16 or 32 kilo on boa…
... bit since last time. The routine now supports Zon-X ( ... />
; Note Table Creator (c) Ivan Roshin
; a - notetablenumber ... />
; Vol Table Creator (c) Ivan Roshin
; a - versionforvolumetable ... sbc hl, de
jp m, ch_amp
ld a, (ix ... -
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…
... testing. It is called RET M. This one seems almost perfect ... it at the end (my routine doesn't use any pushs ... />
IN A,(C) ; 12
RET M ; 5/11
IN ... A,(C) ; 12
RET M ; 5 ... -
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…
... QUOTE]
Well I'm pleased to say that the ... call make_room ; call the MAKE_ROOM routine
inc hl ; move HL ... routine (REPORT J)
ld (hl), c ; low byte of the input routine ... /> push hl ; And another useful routine - it
push af ; ... -
Development choices, help!As a small part-time project I would like to convert my daily programming work (a workflow/bpel engine) to the Spectrum, purely for fun. I would like…
... ]Now I'm going to need an edit-line routine and support ... 's a routine I'm currently using with the proportional routine for input ... . It's currently in C, and in ... /> // glad to see that the routine is in XOR mode
A Pointless Propotional Font demoSomething I've made the last couple of days, which is probably completely pointless, but might be a bit amusing. It's also not worthy of posting thi…
... to borrow an existing routine and modify on it ... of that is written in C. The interpreter is, ... more time on the proportional routine than the GAC interpreter. :) ... already about 95% written in C.
[QUOTE= ... and other stuff. I'm sure you can understand ...A Pointless Propotional Font demoSomething I've made the last couple of days, which is probably completely pointless, but might be a bit amusing. It's also not worthy of posting thi…
... , I've already converted a C-64 GAC game to the ... who wrote the proportional font routine. Without them I would never ... all the files, the font routine is not written by me ... any of their code (I'm not very good at handling ...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…
... still have to implement display_screen() routine? All I see now is ... , starting from address 16384. I'm not really sure of the ... /reference/reference.htm]The old C.S.S. FAQ[/url] and ...binutils questionSince there's a few people using binutils these days I thought I'd give it a go and see whether it solves my hunt for a replacement assembler/librari…
... precompiled piece of music playing routine at, say 50000.
printf(""%s %c", strings[2], strings[2][3 ... correctly, there are C implementations that returns errors ... an example. I'm actually not asking you ... , although obviously I'm also happy if some ...A Pointless Propotional Font demoSomething I've made the last couple of days, which is probably completely pointless, but might be a bit amusing. It's also not worthy of posting thi…
... ]My version is written in C (i.e. a lot bigger ... portable (except for the font routine, obviously), and I have problems ... that.
What I'm doing is shopping around for ...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…
... 0x1655 ; call the MAKE-ROOM routine
inc hl
... by decrementing it
jp m, CHK_AT ; expecting a regular character ... the screen byte
or c ; combine half screen and ...
