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Beta/Sam/Master basic as spectrum ROMWith emulators being trivial to use to insert new ROMs into - and even in the physical world, RAM in place of ROM by use of a modified multiface or s…
... world, RAM in place of ROM by use of a modified ... ?
Not that I'm anything like a coder, but ... I'm curious about the idea and ... -
David M WebbDavid M Webb wrote his books on Spectrum machine code, Starion (and an early disassembly of the ZX Spectrum ROM) while he was at school. He invested…
David M Webb wrote his books on ... disassembly of the ZX Spectrum ROM) while he was at school ... -
Inefficient code in ROM, from ram-check to RAM-DONEHere is the inefficient code: [CODE] ;; ram-check L11DA: LD H,D ; Transfer the top value to the HL register LD L,E …
... memory address.
CP H ; Have we reached ROM - $3F ?
CP H ; Have we reached ROM - $3F ?
L11E2: CP H ; Have we reached ROM - $0000 ?
... -
What's wrong with this code ?OK, working my way through Jonathan Cauldwells 'How To' tome and I can't get the following to run in either spin or basin. ( iused the assembler in b…
... .
I'm thinking it's something to ... />
call 3503 ; ROM routine - clears screen, opens chan ... the current value?
cp 4 ; is it at ... the current value?
cp 21 ; is it already ... -
Sinclair 128 versus +2 ROMHi, A quick question regarding ROM compatibility between two 128 ROMs, the ROM for the original black Spectrum + 128K with the heatsink and the grey…
...
A quick question regarding ROM compatibility between two 128 ROMs ... , the ROM for the original black ... and if so which ROM do they work with ... machines, I'm curious to know which ROM would be better ... I could fit the ROM from the original 128 ... -
multi-scroll m/c subroutine for BASICArising from recent posts, here's a scrolling routine that will manage multiple left/right scrollings for any (sensible) line width or step; (ie. whe…
Arising from recent posts, here's a scrolling routine that will manage multiple left/right scrollings for any (sensible) line width or step; (ie. where width is -
Emulators and Rom's on MacSo I finally decided that my mac is not just for work, but also for a little fun (no point in having a top computer if I can't even play Footy of the…
... it...).
I'm thinking on Spectrum Emulators and ... do you guys recommend? (i'm sure I've asked this ... have tons of years of rom downloading, that I would hate ... -
ZX mask ROM chips curiosityJust out of curiosity... what willl happen if we have a Hitachi ROM and the bridging onboard is on the N positions (for NEC)? While I was searching …
... if we have a Hitachi ROM and the bridging onboard ... that was set for NEC rom but the chip (socketed) ... a "GI TAIWAN" mask rom (I'm assuming thats a Hitachi ... fine, and passes the ROM test on the Sinclair testing ... of the factory, no rom has been replaced and no ... -
ZxSpectrum 128k ROMHi I'm looking for a ready to burn eprom file containing the 128k rom, mine is gone. I found on the web the image of the rom but are two files 16k ea…
Hi
I'm looking for a ready to burn eprom file containing the 128k rom, mine is gone. I found on the web the image of the rom but are two files 16k each.
Any help is appreciated
Andrea -
Rotronics Wafadrive v.1.80 ROM - Corrupt or purposely broken?I've been digging around the Wafadrive v1.80 ROM (from [URL="http://zxspectrum.it.omegahg.com/_RO.htm"]here[/URL]) and can't decide if the ROM is cor…
... around the Wafadrive v1.80 ROM (from [URL="http://zxspectrum.it ... can't decide if the ROM is corrupt, or has been ... /> set 2, (iy+$01)
cp $36 ; 27 hook codes ($1b ... haven't found any other ROM images to compare against, so ... -
Diag rom works cartridge on +2A/+2B/+3I'm not sure anyone has tested this before: using the diag rom (Paul Farrows) on a +2A/+2B/+3. I had a +2A with a problem, so I wanted to use the di…
... 'm not sure anyone has tested this before: using the diag rom ... wanted to use the diag rom.
But both Interface 2 ... will work with the diag rom.
And so it ... -
ROM game cartridgesHi, last time i got al lot of ZX 48k stuff. Also all the 10 games on ROM cartridges, most of them are in good shape. I'm not a collector, so i have n…
... all the 10 games on ROM cartridges, most of them are ... 'm not a collector, so i have no use for those ROM ... .
So are those ROM cartridges rare?
And what ... -
Hooky - hook ZX ROM and rewire RST and NMI to RAM - rantThis is a rather long rant. Not for short tempered. :) The objective is to hook into RST "vectors" and NMI on a Spectrum without affecting the normal…
... br /> Possible applicatons for such ROM:
- debugger with sw ... by rewiring RST 0x00 /,
- ROM extensions,
- IM1 routines. ... br />
QUESTION: disclaimer ... ROM overwrites address FFFD thus ...what ...
0x11DF CP H ; a=3f (ROM TOP)?
... -
404 for Retroleum's daignostic ROM: Request.[url]http://www.retroleum.co.uk/electronics-articles/a-diagnostic-rom-image-for-the-zx-spectrum/[/url] I'm getting access denied when I try to downl…
... .uk/electronics-articles/a-diagnostic-rom-image-for-the-zx-spectrum ... 'm getting access denied when I try to download the Diagnostic ROM ... -
JET PAC ROM & INTERFACE 2Hi - I have two items for sale either singularly or together- A working Interface 2 and a working Jet Pac ROM cart- (in box but no instructions) I am…
... and a working Jet Pac ROM cart- (in box but no ... sell these asap - and I'm in town posting early this ... -
ZX rom type detectionHere is routine for fast detection of zx rom / computer model. [URL="http://velesoft.speccy.cz/other/ZXROMDETECT.zip"]http://velesoft.speccy.cz/othe…
... for fast detection of zx rom / computer model.
... LD A,(#4B)
CP #BF
RET Z ... /> INC C
CP #15
RET ... /> INC C
CP #26
RET ... -
Searching for correct Betadisk 48k TR-DOS v4.12 ROM (Save ROM via TRDOS-Prompt to Disk)Hi, I have two ROM-Files which should be read out from an original Betadisk 48 Interface TRDOS v4.12 (ROM-Size 8k). But when I compare them, they…
... .
First ROM has Checksum: SHA-1: C8BAAEF66AB7FBF457BA76B783C02434CC5E2130 ...
Second ROM has Checksum: SHA-1: 9286FA43490BACA9E61367BA569D29A91FC3EEB9 ... (Yes, 16k size, as I´m not sure where it is ... -
Rom routine for pixel addressDear all, Having my bi-annual 'lets try machine code' project again and have come up with a problem with the pixel address rom routine at 8874. …
... problem with the pixel address rom routine at 8874.
Rom Dissassembly book, I'm trying to do the ... -
Spectrum+ 128k ROM replacementHello, I want to change the stock ROM of my Spectrum+ 128k with an EPROM ([url="http://pdf.datasheetarchive.com/datasheetsmain/Datasheets-32/DSA-6…
... want to change the stock ROM of my Spectrum+ 128k with ... or N bridge, so I'm not sure what should I ... -
48K Issue 3B ROM to EPROM methodsHi folks, While fixing up a completely dead Commodore PET I needed a way of testing the 4116 RAM chips that make up its 32K, some googling found a…
... the 48K ROM and a diagnostic ROM from Paul ... ve found of doing the ROM - EPROM replacement, either ... />
Sanity check ROM burner (MQP Pinmaster 48) by ... the 27c256 with stock ROM (previous attempt had been ... .
I'm quite happy to leave the ... -
Complete Spectrum ROM Disassembly copyrightApologies if the answer to this question lies somewhere in the bowels of this forum, but I couldn't find any information on it. It's impossible to…
... of the The Complete Spectrum ROM Disassembly (by Logan and O ... (and perhaps others). What I'm wondering is from whom (if ... I'm considering doing a SkoolKit job on the Spectrum ROM and ... -
The Complete Spectrum ROM Disassembly - SkoolKittedAs [url="http://worldofspectrum.org/forums/discussion/52745"]indicated previously[/url], I've recently been working on converting Logan and O'Hara's …
... and O'Hara's Spectrum ROM disassembly into SkoolKit format.
So I'm pleased to announce that Phase ... ="http://skoolkid.github.io/rom/"]The Complete Spectrum ROM Disassembly[/url]
Detecting TR-DOS w/o relying on system variablesOK, I know it's much easier to do this simply by checking whether the BASIC program area has moved or some specific pattern in the sysvars etc (somet…
... being intact. Which I'm sure it is on most ... "NOP: RET" in TR-DOS ROM (any version)
.xor_lp ;- ... Sinclair font data in 48 ROM
xor (hl) ;First ... #3D2F~#3FFF area in 48 ROM.
inc hl ;This ... TR-DOS and exit.
cp #DD
ret nz ...Recommend games that don't need the ROM ?I'm looking for a few games that: * Are freely available as .sna files * Do not need the ROM at all * Have motion on screen after snapshot resta…
I'm looking for a few games ...
* Do not need the ROM at all
* Have motion ...ROM PRINT routine issuesHi all, I am using the ROM print routines a lot in my assembly program and I'm experiencing issues. I am changing the system variable DF CC to po…
... />
I am using the ROM print routines a lot in ... my assembly program and I'm experiencing issues. I am changing ... by 1 character. I'm assuming the ROM print routines are updating ...Wanted - Space Raiders ROM CartridgeI keep an eye on eBay and there's a Space Raiders ROM cartridge up for sale at the moment, but I don't think it's worth £70 for such a tatty box. …
... there's a Space Raiders ROM cartridge up for sale at ... tatty box.
I'm trying to complete my cartridge ... missing the instructions, but I'm not going to pay a ...Disabling the ROM without removing the whole thingHi! I've got my hands on a non-working issue 6a. I suspect the ROM may be bad, but other things may be faulty as well. I've read that in an otherwis…
... issue 6a. I suspect the ROM may be bad, but other ... otherwise working speccy removing the ROM gives a very specific screen ... problem to the ROM.
But the ROM (a NEC type ... ) is soldered on, and I'm reluctant ...Precisely what is the ROM licencing situation?Freeware use, that is. Are the Speccy ROMs allowed to be used in any utility related to Spectrum emulation, or just in actual emulators? Is it …
... to use part of the ROM (I'm thinking specifically of the ... character set), or does the entire ROM ...Need help with keyboard scanning ?After getting frustrated with learning ASM for a while I'm back into it. The little listing below is using the ROM's PRINT AT routine to draw me a sp…
... 'm back into it. The little listing below is using the ROM ... 's something simple but I'm not seeing it.
[code ...
LD A,(INKEY)
CP 13
JR Z, MAIN ...
[/code]
Why I'm assuming this should work because ...
