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So it occurred to me; "Why bother with going into 48K BASIC when you can just....wrap the machine code calls inside a 'RST #28;DEFW addr:RET'?" Of course, you DO need a small M/C routine to do that, and ta-daaa, here it is: [cod…
I thought all of the 48K ROM routines were accessible from 128 basic?
Only difference being SPECTRUM and PLAY replacing 'T' and 'U' in the UDG set.
I'm looking for a way to do the reverse i.e. 48K basic to 128K. -
"ZX80 Brain" RPN CalculatorIt is at times like [url=https://www.worldofspectrum.org/forums/discussion/54176/depression]when threads such as this are posted[/url] that I get the…
... 't fill with junk in 128/+3 BASIC. (It's ... it...);
= a routine will disable trying to negate zero; ABS ... key;
= a routine will disable taking the reciprocal of zero ... key;
= a routine will disable square roots of negative numbers ... -
DivIDE allram mode help neededHi guys, are there any DIVIDE wizards out there that can explain how i page in the allram and add a rom file to it i sometimes need to load spect…
... two 16kB rom pages and disable or enable writing to low ...
di ;always must be DIsable interrupt, else during LDIR jump ... divide rom...
ld a,128
out (227),a ;enforcement ... is mapped
ld a,128+64+3 ;enforcement cause enable ... -
Help understanding the Z80.So I have a Z80 CPU and a 32k ram chip. I understand how they connect. (Data and address busses, chip select etc.) But how would i input information…
... top of memory and then disable itself so that RAM can ... and write individual sectors (say 128, 256, 512, .. bytes - sector size ... -
Send in the ClonesPlease name all the Spectrum clones out there ( I would say I need it back on my desk in 5 minutes , but I will be a bit more generous in this case!…
... the book {ZX Spectrum 128 Introduction|Sinclair Research Ltd}.
ZX Spectrum 128 +2A - Essentially a redesign of ... br />
ZX Spectrum 128 +3 - A small hardware revision ... command for User Defined Graphics UDG), beeper sound produced via ... -
Can't Get My Simple Code To RunHello again, I'm trying to run the following simple code: [code] org 32768 main ld b, 21 ; x coordinate is …
... ," 00xx" ; between 128 and 164 are grafics and UDG's
defm ... -
Multiface ResidentI'm thinking about adapting some existing code to be Multiface "resident"... but being perfectly honest I'm not quite sure where to start. Any top t…
... ]
org 40000
;Multiface 128
in a,(191 ... />
You might want to disable/enable interrupts as well (DI ... -
BREAK key on 128k SpectrumWhat happens when BREAK is pressed on a 128k Spectrum? Why is it different from what happens on a 48k Spectrum. Is there a way to disable it or to …
... ,PEEK 23671: RETURN
REM DISABLE ERROR TRAP
9120 LET ... ,195,125,27
[b]+128/+2[/b]
POKE 23435 ... sp : jp $1b7d".
[b]+128/+2[/b]
The first ... -
Unexpected issue with +3DOS port of Pro BMX SimulatorI'm continuing to port my tape-based games to 3-inch disk (you may have noticed my previous post about PSSST!). Today I started on Pro BMX Simula…
... 't see a way to disable the RAMdisk, though DOS_SET_1346 will ... it safe to assume the 128 sectors are number sequentially through ... -
Unexpected issue with +3DOS port of Pro BMX SimulatorI'm continuing to port my tape-based games to 3-inch disk (you may have noticed my previous post about PSSST!). Today I started on Pro BMX Simula…
DOS_SET_1346 [b]can[/b] disable the cache entirely. Use de=0 and hl=128 and the cache will be disabled (but keep on mind that RAMdisk will be enabled). I guess that de=0 and hl=0 will disable everything. -
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…
... this area is used for 128 features like switching memory ... (no AY). Or from 128 program, disable the 128 paging and write 256 ... Loader.
Code to disable paging and clear printer buffer ... br /> res 4,(iy+1) ; disable 128k paging
ld hl ... -
Multiface 3 hacked rom?Hi, I need to transfer some games on the +3 disk drive using my MF3. I know you need to have the MF3 pluged in in order to load the games afterwa…
... in the 128 first, then the 3. then disable the IORQ line ... to the 3 before paging in the 128 ... -
Paging for 64Kb of Video Ram??? What is the best way to page this?Hi all, I'm just putting together a concept card for a "Loki" style of video card, which supports shadow ( so it fits a normal Speccy ) and also t…
... move software... Would need to disable interrupts though to avoid executing ... upgrade for the 48, + or 128 model, and still maintain all ... -
Strongest aspect of Spectrum BASICWhat would you say is the strongest aspect of Spectrum BASIC compared to other BASICs on other micros at the time. I think it might have been the Fun…
... was being able to create UDG's which in turn allowed ... again by running FUSE in 128 mode so as to make ... -
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…
... screen
cls:
di ;disable interrupt
ld (.stack+1 ...
ld b, 128 ; clear attribs in 128 * 3 pushes
ld ...
