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48k memory dump to 128k???Having problems getting a 48k snapshot to load into 128k mode using ZX Spin. Tried saving 48k memory as a binary file and loading it back in 128k mo…
... general :- consider where is the stack located, what is SP pointing ... -
Spectrum Plus display issueHi, does anyone know if this is fixable at all by someone with no experience? From looking on a similar post on World of Spectrum forum they mention…
... RAM is used for CPU stack, CPU cannot work correctly if ... you have to reseat the ROM chips (if they are not ... can fetch data correctly from ROM chips. Tell me if you ... -
+128 with usr0 in menu screenIve just watched a video of a guy with a spectrum and on the loader menu i think under calculator the menu had an entry for usr0,anyone aware of this…
... .dropboxusercontent.com/u/15659782/128plus.rom[/url]
As requested ... 0
Calculator
Tape Tester
This ROM will work ... -
+128 with usr0 in menu screenIve just watched a video of a guy with a spectrum and on the loader menu i think under calculator the menu had an entry for usr0,anyone aware of this…
... /> TR-Dos
Usr0
Calculator(maybe leave out)
Tape ... :[/QUOTE]
Getting the ROM on the real machine is ... have one Editor ROM and one BASIC ROM in 32K so ...
If you want more ROM choices then you need to ... 2B and Guesser's flash ROM board. -
+128 with usr0 in menu screenIve just watched a video of a guy with a spectrum and on the loader menu i think under calculator the menu had an entry for usr0,anyone aware of this…
... is faster, has a running calculator, has an actual RENUM command ... work with the original 48 ROM, and if not, there's ... -
Seriously weird Issue 2 issue... (RAM-related)Hi guys; I have been trying to fix up my Issue 2 and have run across a bizarre issue that I haven't seen elsewhere in the forums. Hopefully one of …
... memory check routine in the ROM is being fooled and the ... ROM code is setting the CPU machine stack in the ... chip is corrupting this machine stack. As a result, the CPU ... -
Keop?s Revenge, to Albert Valls, How to jump??Im playing this funny and BASIC made game and managed to reach the snakes screen, but I cant find which key is used to jump... Tried "Q" as it is use…
... /I think/ is the SCREEN$ stack bug. If the SCREEN$ function ... reliably on a bug-fixed ROM like SEbasic.
But ... SCREEN$ bug. Using a fixed ROM could result in it never ... -
maths questionNB this will probably show what a tragically low level understanding of maths I have, but hey ho :-) for some reason the other day I suddenly remem…
... , you can replace your scientific calculator.
Concerning trig functions ... tap those expansions into a calculator instead of pressing "sin" or ... the trig functions. The Spectrum rom uses a Chebyshev series which ... -
Skool Daze & Back To Skool discussionFollowing my video of Back To Skool ( [url]http://youtu.be/4K2ZUkTOT0g[/url] ) I just wanted to see if these two games are still fondly remembered b…
... , so a copy of the ROM and the screen would be ... so it could repoint the stack and start the game. You ... -
Skool Daze & Back To Skool discussionFollowing my video of Back To Skool ( [url]http://youtu.be/4K2ZUkTOT0g[/url] ) I just wanted to see if these two games are still fondly remembered b…
... , so a copy of the ROM and the screen would be ... so it could repoint the stack and start the game.[/quote ... was the screen (and the ROM)... I remember being able to ... -
Games club - July 2014Quickie before August.
Stack fiddles while ROM burns. -
Issue 4s - Not 'Jailbars' but lines alloverIt's not another 'Jailbars' question!, but I've got this Issue 4S that aside from the 'Jailbars' on the Paper area of the screen which I can live wit…
... LOAD routine is stored in ROM, which is not contended. It ... ) is some bytes from the stack area, which is at non ... -
llvm-z80 statusFew months ago I read about efforts to produce llvm back-end for the Z80 (even perhaps as part of new z88dk). Any update on that? I found [URL="htt…
... information about function names, arguments, stack, static variables, types, etc. of ... to a function on a stack and some optimizations such as ... present I run a special ROM to use FUSE to debug ... ZX Spectrum using standard Sinclair ROM. That is what these guys ... -
Issue 6 repair with a twist...(Starting with a slight grump - the forum ate my first attempt at this so this'll probably end up being a bit terse :)) I got a Issue 6 48K machine …
... (or anything that uses the stack for flow control), and also ... registers. Usage of the available ROM space isn't a problem ... -
Issue 6 repair with a twist...(Starting with a slight grump - the forum ate my first attempt at this so this'll probably end up being a bit terse :)) I got a Issue 6 48K machine …
... (or anything that uses the stack for flow control), and also ... more tools in a 8k rom than just a memory test ... -
clear a windowed area of the screenHi everyone! Ain't been on here for donkeys, but have recently started messing around with a little game. I'm looking for ideas/opinions on the bes…
... want to clear at the ROM?[/QUOTE]
Could I ... /> ld (exit+1),sp ; preserve stack
ld a,192 ... :
ld sp,0 ; recover stack
ei
ret[/CODE ... -
Design your ideal Spectrum 'console'.Sparked by the ZX Vega, a lot of us have spoken about desired features. Disregarding any technical issues, how would your ideal new speccy work? …
... conveniences like HDMI, save states, ROM switching, SD card support etc ... an ARM SoC and Linux stack anyway.
Essentially, pretty ... -
RAND USR that doesn't work in emulators and clonesEons ago, I "discovered" a strange RANDOMIZE USR. This is it: [b]RANDOMIZE USR 46578[/b] Using it on a genuine ZX Spectrum rubber key or Plus model,…
... reset status, switch to a ROM that doesn't clear memory ... at the top of the stack was 4444h. [B]The PUSH ... -
Return to basic from sna created by Z80 compilerHow can I go back to basic when running sna created using Z80 Assembler ([url] http://www.worldofspectrum.org/utilities.html#crossass [/url])? For e…
... /> [*]The return address on the stack must be to $2D2B:STACK_BC ... remaining values on the machine stack will vary dependent upon the ... 3 bytes for each GOSUB stack entry (if any) and a ... a byte containing $38, the calculator literal for "end_calc", which is ... -
SDCC DivuIntwhen I divide an integer sdcc wants to import a function called divuint I think it used to be in z80.lib but now it doesnt seem to be in there. Im …
... to be unchanged. The rom isr is troublesome because ... pointing into the stack so the rom isr will corrupt ... the stack. Incidentally, this ... /> If you have the rom isr running you will have ... isn't compatible with the rom isr.
... -
Testers for new z88dk clibA long (long, long, long) time ago a few people offered to help test the new clib in z88dk. Much time has passed since then and I won't hold people,…
... output CLIB_EXIT_STACK_SIZE = 0 // no exit stack
#pragma output ... tap files, etc. Other options (+rom, +extract, +inject, etc) ... an if2 cartridge) with +rom, then +inject to insert ... the font from a spectrum rom file).
Testers for new z88dk clibA long (long, long, long) time ago a few people offered to help test the new clib in z88dk. Much time has passed since then and I won't hold people,…
... the entire structure onto the stack for the function to consume ... will play nicely with the rom isr
--max-allocs-per ...Floating Point Package Math48<br>I came across a neat little floating point package for the z80 and I'm adapting it now to work with z88dk and sdcc. There is an interesting…
... 27 seconds and the zx rom / genmath taking over 2.5 ... that hex string in your calculator.
To multiply by ... spare.
The zx rom, despite having fewer mantissa bits ...128k toast rack diagnosisHi - I recently won a 128K toast rack, and have got a Retroleum smart card. I've tried a couple of games and all seems fine...-ish.<div><br></div><di…
... correctly when launched from the ROM manager.
TL;DR ... Mode 1, place the stack in upper ROM
; (to be SRAM ... (+2A/+3), the 48 BASIC ROM. This will prevent any custom ... /> SNAPLOAD is not run when ROM image is in slot B ...EmuZwin 128k banks in assembler Having looked at the assembler help file " ORG [{ RAMn | ROMn },] #target_address [, #dest_address ] Defines target assembling address and ta…
... SWAP ; Page in ROM0 128K ROM
DI
LD ... SWAP ; Page in ROM0 128K ROM
DI
LD ... wilson.net/spectrum/rom/"]matthew-wilson.net/spectrum/rom/[/url] for more ... used for subroutine code
Stack SP set to below $C000 ...Peeking the contents on screen? How?You will have to forgive me for growing up on the C64, but I know I can peek the location of a character (1024 is top left from memory) and the peek …
... in and out RAM and ROM; it's a much simpler ... you can address is the ROM, then comes 48K of RAM ... , addresses 0-16383 are the ROM.
16384-32767 are ... the ROM stores the variables for your BASIC program, and the stack ...DiscipleI have got a Disciple Disk Interface, with no manual, software. I have downloaded the PDF Manual from WOS, which says I have to load the operating…
... puts fewer bytes on the stack than calling the DISCiPLE ... isn't accessible to the ROM/system routines), which interrupt ... to work:
48K ROM:
0x0000, 0x0008, 0x0066, ... 0x028E
128K ROM:
0x0066
It ...DiscipleI have got a Disciple Disk Interface, with no manual, software. I have downloaded the PDF Manual from WOS, which says I have to load the operating…
... on fewer bytes of stack content being overwritten when ... work:
48K ROM:
0x0000, 0x0008, 0x0066, ... 0x028E
128K ROM:
0x0066[/quote]
ROM access, not for detecting ...64k speccydoes anyone have instructions on how to use the extra 16k found in some spectrums?
... since BASIC will lose its stack if it's on the ... 's pin 28B, for 'One ROM' and
respectively 15A, for ...The best ZX Spectrum emulatorsIt's been suggested we add a sticky thread where people can recommend their favourite emulators. A couple of rules. 1. Don't just nomina…
... :page” to catch the IF1 ROM being paged in). You can ... is at the top, the stack contents, and the event list ... height of the instruction and stack lists and were therefore not ... heading of “Instruction” for the stack data values is unhelpful at ...
