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A 128 Routine to Put Tokens in StringsI was writing a DEF FN on the +128k and decided that I'd had enough of not being able to put function tokens in strings without a great palaver and s…
... I wrote this little BASIC routine to do it for me ... -
checksum routine from Space GunThis routine starts off with HL=$ffff and a file header read from tape, for each byte of which in turn it assigns to A and calls this routine, ending…
This routine starts off with HL=$ffff ... to A and calls this routine, ending up with another value ... -
Checksum routine wantedI wish to make a program that verify integrity of a Multiface 1 ROM. It is possible to compare each byte of the ROM against a binary dump, but this i…
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Thus, I need a routine that calculates a unique value ... -
maximum addressable RAM for a Z80 using bank switching?What is the maximum addressable RAM for a Z80 using bank switching? The Enterprise64 home computer could address up to 4MB, is this the limit for a …
What is the maximum addressable RAM for a Z80 using bank ... kB) are used as video RAM, but can be used for ... , the additional 64 kB of ram is mapped on pages 248 ... -
How to benchmark a single routine?I've written a routine. It works. But it was never meant to be the final version. So I rewrote it. The new routine works too. Yay. :) However, I'd …
I've written a routine. It works. But it was ... I rewrote it. The new routine works too. Yay. :)
Will disc drive this work for a +2B?Morning all, I was looking around ebay and saw this, the desprition says it will fit a +3 but also mentions a 34 pin edge connector. My +2B has two e…
... "]the eBay link to the disc drive[/URL]
thanks ...Spectrum 128k +2 grey RAMhi all, the manual say that ram ic's should be KM4164B-15P but when i open my spectrum (not repaired by anyone) the ram chips was KM4164B-12 is thi…
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the manual say that ram ic's should be KM4164B ... (not repaired by anyone) the ram chips was KM4164B-12
ram?
something else, ... 48k issue 2 zx with RAM chips IC 6-13< ... to remove all the 48k ram chips? it will not ...RAM Diagnostic ROMhi all, i burn this ROM from here [url]http://www.fruitcake.plus.com/Sinclair/Interface2/Cartridges/Interface2_RC_New_RAM_Tester.htm[/url] and i a…
... try to diagnostic a probably RAM fault on my +2 grey ... have some new and old RAM ics KM4164B-12 [B]only ... i can identify the faulty RAM ic?
any tips will ...+2 grey Contended RAMhi all, i have some quenstions about, contended RAM are banks 1,3,5,7 banks are the pairs of IC's (4164), so 1 pairs = 16k X 4 pairs = 64k this 64…
... quenstions about,
contended RAM are banks 1,3,5 ...
now psysical, contended RAM are the IC's on ...BetterBytes Disc-Mate MGT Protectionmornin all while lookin at a few programs last nite i noticed disc-mate has some form of protection on it it will load fine in zxspin but try and loa…
... programs last nite i noticed disc-mate has some form of ...ZX81 + 16K RAM PackUp for sale is a ZX81 packaged with power adapter, aerial cable, ear/mic cable and 16K RAM Pack. I hooked it up to the tv and although the power sup…
... , ear/mic cable and 16K RAM Pack.
I hooked ... unable to test the 16K RAM Pack.
ZX81 + Power ... [/IMG]
Complete 16K RAM Pack:
[IMG]http://i629 ...16K/48K Lower RAM (4116) replacement.You may want to read [URL="http://www.worldofspectrum.org/forums/showthread.php?t=37957"]this thread[/URL] for background information on the quest t…
... based replacement for the lower RAM that works in all 16K ... the column address to the RAM and so there isn't ... that appear on the lower RAM address lines. In particular, in ... is the ZX Spectrum Lower RAM Replacement Module, pictured below:
More tea, vicar on disk?Hello, can somebody help me putting the 128k version of this game on disk? The 128k version is free available from Jonathans Webseite. However, the g…
... . I think there is a routine checking if using a 128k ... the sound is loaded into RAM Bank, but which one? I ...ZX Spectrum 48k Issue 2 Faulty Ram?Hi, I have a faulty ZX Spectrum Issue 2 motherboard. Looks in very tidy condition. Though I'm getting random columns of blocks and flashing cursors…
... read would indicate a lower ram failure. I have lightly touched ... seem cool.
The ram fitted is 8322 4116 2N ...4116 Ceramic Ram ChipsHi all, I have a few 4116 Ceramic Ram Chips to sell. If you have any interest, please PM. Greetings, Retrorepair
Hi all,
I have a few 4116 Ceramic Ram Chips to sell.
If you have any interest, please PM.
Greetings,
RetrorepairAnyone got any 4146 RAM chips?Hi I'm looking for some 4164 RAM chips, as would be fitted to a 128k Spectrum (+, +2, +3 I think they all use the same memory). Not out of a 48k mac…
... 'm looking for some 4164 RAM chips, as would be fitted ...Struggling with this routine... Any ideas?I'm trying to write a routine that plots 3 pixels to decrease the energy bar in the top right corner by 5 units, but it just wont have it! There mus…
... 'm trying to write a routine that plots 3 pixels to ... /> call $22E5 ;call ROM plot routine
pop bc
inc ...display file addressing; screen slicingWhile working on this Compendium I'm updating or rewriting a lot of stuff. One thing I eventually came to appreciate was the simple & clever way in w…
... from assembler.
The routine starts off like this:
RAM and saved as a single ...Sampling routineLooking for a simple yet crude sampling routine that I can use on a forthcoming game. I've tried most of the ones from the archive and find them uns…
... a simple yet crude sampling routine that I can use on ... spare and just need a routine that goes "YEAH!"
Zero 0.6I'm pleased to announce that I've released Zero 0.6. There are some comprehensive changes in this release including moving to .Net 2.0, removing Slim…
... using a new sound emulation routine (based on Alex Mateev's ... load/save data into any RAM page (for 128K and above ...Strider II (and others) + 3 disk versionsHello everyone, I've been working on converting some games to be able to load them from the +3 floppy. I started with single load games but now Im i…
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ld a,7 ;ram 7, rom 2
call ... Also I have a LDIR routine at 48641 which backups some ... routine to 23900, jumps to it, and restore the ram ...
ld a, 22 ;select ram 6, rom 3
call ...
ld a, 22 ;loads ram 6, rom 3
call ...Games/Programs making use of DivIDE featuresHello :) I have a question: I may be wrong, but it looks like the DivIDE and similar interfaces for the ZX Spectrum are almost exclusively used for …
... makes use of the extra RAM or super-fast file access ... to the ROM tape LOADING routine. Also, would it be possible ...ZX Spectrum upper RAM module (4532/4164 replacement)Following the [URL="http://zx.zigg.net/LRR/"]lower RAM replacement module[/URL], there have been quite a lot of requests for something similar for th…
... zx.zigg.net/LRR/"]lower RAM replacement module[/URL], there have ... zx.zigg.net/LRR/"]lower RAM replacement module page[/URL] and ... trailing wires, so the upper RAM module uses almost the same ... as the lower RAM replacement and emulates dynamic RAM.
...Redefine keys routineHow would I go about making a memory efficient redefine keys routine? I only want to define up, down, left and right and reserve key 'H' for pause.…
... a memory efficient redefine keys routine?
I only want ... .
The key scan routine in the game goes something ...Driller +3 DiscI found this this game at an antique(!) place a few years ago and I know the game is well rated and afaik finding a physical copy original near mint…
... copy original near mint +3 disc is rare like hens teeth ...Rubber Key RAM - Repair?Hello there everyone! I'm a long-time lurker on here - ROMs, documentation etc. but yesterday I finally ponied up for my own speccy, just like the on…
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I carried out the RAM test I found elsewhere on ...Hardware description - DivIDE interface[B][U]DIVIDE interface / DivIDE 2k11[/U][/B] [B][U]The main description[/U][/B] DIVIDE is IDE interface with own external memory. Thanks to very goo…
... /> DIVIDE interface use external 32kB ram + 8kB rom memory(reflashable eeprom ... , modify rst8 and im 1 routine, use new correct NMI menu ... as 2bit number of external ram page. Ram page is visible on ... rewritable)
#2000-#3FFF = 8kB ram page (one of four pages ...Adding a pause key to ArkanoidHaving rediscovered the simple pleasure of playing 1980s games on genuine 1980s hardware, I've also remembered that emulation can provide a feature m…
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So, we have a routine implementing the pause function; where ... I think the routine should go in uncontended RAM, if there's ... is in RAM, so we can drop our keyboard routine over the ... the breakpoint, assemble the keyboard routine and load it into memory ...
