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128K+2A/+3 RAM layoutDoes anybody know how physical RAM is mapped to ZX 128k+2a/+3 address space ? There are four 64Kx4 chips IC4-IC7. IC4-IC5 seems to be contended (vide…
... -IC7, but not sure which 16K bank goes to which part ... test program, can be on ROM chips. -
ZX80 Rom and Z80Can you pop a ZX81/TS1000 Z80 in the ZX80 as is and can you burn a rom to eprom and pop in? I'm watching an auction on Ebay and both Z80 and ROM are…
Can you pop a ZX81/TS1000 Z80 in the ZX80 as is and can you burn a rom to eprom and pop in?
I'm watching an auction on Ebay and both Z80 and ROM are missing. -
Which Issue 1 Spectrum model is most desirable - 16K or 48K?Can one of the collectors out there settle a argument between me and my mate? If a 16K and a 48K issue 1 Spectrum, in similar condition, where place…
... mate?
If a 16K and a 48K issue 1 ... /> I'm going with the 16K. -
16k versions of 128k games?After seeing the thread about Double Dragon 2 and the crappy cut-down versions of 128k games, I'm wondering if they are some 16k version of a 128k ga…
... wondering if they are some 16k version of a 128k game ... not thinking about a older 16k game converted to 128k (adding ... could run or had a 16k version.
Did exist ... -
line, plot and circle in whole 256x192 displayhi! are there some way to draw lines, or whatever, in the whole 256x192 display, than just the above 256x176 part? (this is the msx1 version i made o…
... in assembly, like calling the 16k rom ("bios") routines, are welcome as ... -
Merging romsHello, I want to flash an eprom with two roms so I can make a speccy be able to have a dual rom using an external switch. I thought i had it right b…
... able to have a dual rom using an external switch.
rom but maybe something else like ... two same size roms of 16K each. Do we merge them ... -
Weird Nero burning rom problemA few months back, I suffered a bad sector on my harddisk. It wasn't a big deal at the time as it was fixed after a reboot and disk scan. However, …
... sector trashed my Nero Burning Rom folder. I couldn't uninstall ... -
New Flash Rom Board for +3 and Black +2As per the other thread I've now sold out of these boards. There is however the possibility of getting a new batch made, and at the same time making …
... expansion device with a flash rom reprogrammed itself. This led to ... -
Request: photo of 16k/+2 SpeccyI'm currently writing an article for a german retro-themed website called the equivalent of "videogame stories" (link [URL="http://www.videospielgesc…
... are [B]photos of a 16k[/B] (the 48k one looks ... ill-fated exchange for my 16k Speccy, so a photo to ... -
Guide to upgrading your 16K Issue 2/3 ...Hi, Because I sell upgrades on eBay to make 48K Spectrums out of 16K ones, I've made a little fitting guide here: [url]http://www.mutant-caterpilla…
... make 48K Spectrums out of 16K ones, I've made a ... -
Rom cartridges: sell separately or together?I have 3 boxed original rom cartridges: is it wise to sell them separately or together in one auction? I also have an Interface 2, so together with …
I have 3 boxed original rom cartridges: is it wise to sell them separately or together in one auction?
I also have an Interface 2, so together with the interface seems to be the best choice to me.
But what do you think? -
ZXC3 "ROM erasing failed"This has happened to me before but I managed to figure out a way to write a compilation back, cant for the life of me remember how now, basically, th…
... how now, basically, the ZXC3 ROM cart got corrupted in a ... -
Internal ROM expansionHas anybody designed a multiple-ROM interface that plugs into the internal ROM socket instead of plugging onto the edge connector? It would be useful…
Has anybody designed a multiple-ROM interface that plugs into the internal ROM socket instead of plugging onto the edge connector? It would be useful not having something dangling off the back of the Spectrum. -
New project: CargandoLeches. Ultraloads with ROMHi This project has started months ago, between decicoder, macleod and me. Uses the best modulation of k7zx (throwing shavings). But this ultraloa…
... />
You need a modified ROM. But if you have a ... can try it without modified ROM: these models has special paging ... it works by emulating the ROM code with RAM).
using the ROM's FP calculatorIs it possible to use the ROM's FP calculator to evaluate any FP expression in a single sequence of commands without breaking out to stack some other…
... it possible to use the ROM's FP calculator to evaluate ...Difficult to find upper RAM fault.I've recently repaired an issue 3B 48K Spectrum that had a tricky to diagnose upper RAM fault, so I thought I'd post a report of what I found here. …
... decided to be a 16K Spectrum. This usually ... run happily as a 16K Spectrum for hours.
ROM program is disassembled below:< ... ://drizzle.zigg.net/ZX/ROM-Memory_test.jpg[/IMG]
ROM) and 32767 was ...Is there a ROM modification (48K) for load without typing LOAD""?The target is to play with 48K machines with keyboard broken, or an alternative solution for new clones like Superfo instead of making a new keyboard…
... easy solution is change the ROM for other that initalites in ...ROM switch on NMIHello! Please, help me or point in the right direction. I am building a project for 48k spectrum which must activate its rom (actually static ram) …
... spectrum which must activate its rom (actually static ram) on NMI ...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 …
... CP H ; Have we reached ROM - $3F ?
JR NZ ... CP H ; Have we reached ROM - $3F ?
JP ... : CP H ; Have we reached ROM - $0000 ?
INC HL ...Blitz - incorrectly listed as 16k[url]http://www.worldofspectrum.org/infoseekid.cgi?id=0027592[/url] The memory needs to be changed from 16k to 48k. Due to my silly own self, I for…
... needs to be changed from 16k to 48k.
... of the game on a 16k machine. The BASIC code ... worked on a 16k machine because it was only ... big to fit into the 16k machine's main memory ... work on a 16k machine.
Sorry 16k owners! You can ...? use stereo jack, lead with 16k ULA5C112E-3?Dear community We have a 16k upgraded to 48 with ULA5C112E-3 chip. The original mono leads are lost and the intention is to add a stereo jack plug. …
...
We have a 16k upgraded to 48 with ULA5C112E ...Interface 2 ROM cartridges images neededHello! Is there any place i can get the rom images from released interface 2 cartridge games ? Maybe somene has it and can read the image and send …
Hello!
Is there any place i can get the rom images from released interface 2 cartridge games ?
Maybe somene has it and can read the image and send it to me?
ArtemOpenSE BASIC 3.1.1The eagle-eyed will have noticed that [url="http://www.worldofspectrum.org/infoseekid.cgi?id=0027510"]SE BASIC[/url] got an update last week. As a te…
... specifically prohibits using the ROM in hardware. Therefore it ... using the the original ROM from the 16K and 48K machines ... (this requires replacing the BASIC ROM ... execute correctly on the original ROM.
* Improved SCREEN ...4 rom cartridges games for Sinclair ZX Spectrum[SIZE="5"][COLOR="Red"]"Space Raiders, PSSST, Jet Pack and Backgammon" FOR USE ON THE SINCLAIR ZX SPECTRUM (ROM CARTRIDGE)[/COLOR][/SIZE] All those …
... THE SINCLAIR ZX SPECTRUM
(ROM CARTRIDGE)[/COLOR][/SIZE]
rom, you will have a chance ...Ben Versteeg's july salesI have some very nice items for sale, including a large set of original ROM cartridges! Having trouble with the prices? Make me an offer! Need more …
... a large set of original ROM cartridges!
... here[/URL])
- ZX81 + 16K ram pack unboxed with power ... 20
[B]Original ROM cartridges (no remakes!)[/B] (pictures ... underneath):
- Plantroids ROM with inlay: €65
- ...The Complete Spectrum ROM DisassemblyHello, looking for a copy of the "The Complete Spectrum ROM Disassembly" book, by Dr Ian Logan & Dr Frank O'Hara, at a fair price. Had it during my …
... of the "The Complete Spectrum ROM Disassembly" book, by Dr Ian ...Distribution status for Beckman Innovation AB 48K ROMToday while practicing the black art of WAV to TZX conversion on my copy of the Beckman Innovation AB 48K rom, I wondered who owns the copyright and …
... the Beckman Innovation AB 48K rom, I wondered who owns the ... even have to, considering the rom has copyright from Sinclair Research ... , thereof):
> Nordisk ROM, (c) Sinclair Research Ltd & ...ROM-elHi, I have a bunch of [URL="http://store.go4retro.com/products/ROM%252del-23128%7B47%7D23256-FLASH-ROM-Replacement.html"]these[/URL]. They are 23128…
... ="http://store.go4retro.com/products/ROM%252del-23128%7B47%7D23256-FLASH ... -ROM-Replacement.html"]these[/URL]. They ... exactly the same. First is ROM and second EPROM and the ... to write my data into ROM. And then switch on 23128 ...Stealth AllRAM SpectrumHaving just received a couple of new keyboard membranes to fix a couple of machines with, the thought crossed me that I should do a special project w…
... machines with the OpenSE ROM (or similar ROM which tokenizes).
< ... />
1. Remove the 16K Spectrum ROM
2. Replace it with ... chip enable on the ROM. Both the ROM's chip enables must ... be active - so basically, the ROM itself combines the /ROMCS and ...TESTROM3 - utility/rom for test your ZXHere is TESTROM3 utility as 16kB ROM file + flasher for install this rom to divide eeprom (or mapram mode). Work also on ZX Spectrum without ROM and …
... TESTROM3 utility as 16kB ROM file + flasher for install ... also on ZX Spectrum without ROM and RAM - use only ... for ZX Spectrum as 16kB rom image.
... work as full transparent rom in divide and user ... can work with 48 rom (olny in divide version ...
