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ZX Spectrum 48K clone and test resultsHi! This is my first post, so, first of all, I'd like to say hello to the whole community! I am Alessandro Dorigatti from Italy and I'm developing …
... the cores can initialize a RAM block uploading a ".TAP" file ... border; between the upper and lower bar, instead, is WHITE.
changing extended RAM pages in SpinIs it possible to edit the data in 128k extended RAM pages in Spin? I've tried both the debugger tool and the pokes tool and, although they let me ma…
... the data in 128k extended RAM pages in Spin? I've ...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…
Does anybody know how physical RAM is mapped to ZX 128k+ ... be contended (video RAM). It would mean RAM banks 4-7
RAM test program, can be on ...Elite mods[URL="http://www.iancgbell.clara.net/elite/z80/index.htm"]Ian Bell's Elite page[/URL] distributes a package with "Russian hacker Spectrum Elite varia…
... variants" that includes both Elite mods registered at WoS. It also ... his approval for distributing the mods at WoS also. Would that ...128k RAM paging from BASICI'd always thought that OUT had to be used to page RAM, which from BASIC would be an "OUT 32765,ddd" command, although I don't know if just doing tha…
... to be used to page RAM, which from BASIC would be ...Spectrum 128k+ Toastrack lower Beeper level?Does anyone know the easiest way of matching the AY and beeper levels? I'm guessing perhaps the easiest thing to do is lower the beeper line rather t…
... easiest thing to do is lower the beeper line rather than ... know the best way to lower the beeper level or raise ...Kiwi OS for z80 computerHi everyone, Nearly made my z80 computer with 2K ROM 32K RAM. It has an OS im still writing called Kiwi (apple, blackberry, you get the idea ;D) he…
... with 2K ROM 32K RAM.
It has ... L ;LOAD A WITH THE LOWER MEMORY
CALL PRINT_DHEX ... L ;LOAD A WITH THE LOWER ADDRESS
CALL WRITE_BYTE ... L ;LOAD A WITH THE LOWER ADDRESS
CP $40 ... ;COMPARE WITH 40 (LOWER PART OF 8000)
JP ...File size in 128K RAM diskHi Folks, Is there a way to get the size of a file stored in the 128K RAM disk from within a BASIC program? Many thanks Paddy
Hi Folks,
Is there a way to get the size of a file stored in the 128K RAM disk from within a BASIC program?
Many thanks
PaddyWhy are the same size memory cards different sizes?I've heard before that two memory cards or USB sticks can have the same official capacity, but be different capacities in reality, and I'm not talkin…
... equals 1,024 bytes in RAM, but only 1,000 bytes ... individual item possibly higher or lower by a smaller amount than ... so MB, GB, etc) is lower than memory of the supposedly ...ZX-7 instruction (BEEPER 8-channels editor)ZX7 was the most powerful ZX Spectrum 48K music editor end engine since 1988 to 2011 (when OCTODE appeared). [url]http://www.worldofspectrum.org/inf…
... /> "Menu" word in the right/lower corner of the screen fades ... managed to fit in 48K RAM 8 (eight!) of my ZX7 ...A Thread with not much Speccyness about it..Sorry this not only non-speccy related but is also somewhat C64 related:o But hey this is the chit forum is it not? Anyway, I already posted this q…
... height of the DDR PC2700 RAM (it's an old MB ... . I know I have seen RAM that is not as vertically ... get some slim DDR PC2700 RAM (a 512MB or 1GB chip ... there was ever any lower profile DDR RAM? Do you have any ...ZX Spectrum not working... issue 4S?Hi, I've bought a "new" broken ZX Spectrum +. The idea was to put an harlequin board inside, but for the moment I'm trying to put it in working order…
... chips for upper RAM mounted in sockets.
- Lower memory chips doesn ... /> - Are there any chance that lower memory is still fine or ...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…
... has special paging that allows RAM in lower memory (so it works ... by emulating the ROM code with RAM ...Ram Turbo compatibilityThe Ram Turbo interface, couple of joystick ports (iirc they can be Kempston too) and a IF2 style cartridge slot. This one > [url]http://www.worldofs…
The Ram Turbo interface, couple of joystick ...zx81: is there a 16kb ram limit for basic?first of all, sorry to all about posting a question about zx81 in a forum mostly about zx-spectrum - i didn't want to offtopic questions here anyway,…
... time were only predicting 16kb ram extension, and this may the ... 32kb, 48kb or 56kb of ram?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 …
... ; pair.
;; RAM-FILL
L11DC: LD (HL ... JR Z,L11EF ; forward to RAM-DONE if faulty.
< ... />
[CODE]
;; ram-check
EX DE,HL ...
;; RAM-FILL
L11DA: LD (HL ...4116 Ram chip replacements?Hello. I am in the work of gathering replacement parts for my speccy 48k. And I would like to know what chips is good replacement for the 4116 ram ch…
... good replacement for the 4116 ram chips, and where can I ...OpenSE 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…
... variable contains at least one lower case letter (variables are case ... Printer support is removed, the RAM formerly used for the printer ...Issue 1 ram connectors....Hi Does anyone have the pinout of the Issue 1 internal RAM connectors, for the 16K-> 48K upgrade board, as I'd like to try and make myself a board, a…
... of the Issue 1 internal RAM connectors, for the 16K-> ...ULA bug and snowI am tryng to improve the snow emulation in FBZX wii but I do not have a real spectrum to test the results. I used the information taken from Harele…
... emulator substitutes to the 7 lower bit of the address of ... not get latched into the RAM but the previous latched row ...RAM Turbo without a slot?Hi! I got this RAM Turbo joystick interface which surprisingly came without a cartridge slot inside. Would there be any reason someone should cripple…
Hi! I got this RAM Turbo joystick interface which surprisingly ...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…
... . Replace it with a static RAM IC.
Ah ... pins than a static RAM. A static RAM has one chip ... to the lower 16K of address space, so the RAM's ...
3. Insert the static RAM into the socket.
A ... pin 20 of the static RAM should be bent horizontal. ...Assembly game programming on ZX how-to?Hi. I'm planning to build and release new software for the Speccy but I'm pretty lame as to handle its hardware despite a good mastery of Z80 assembl…
... drawing the "sprites" on upper RAM and "blitting" it to the lower?Pentagon RAM memoryDoes anybody know or have reference to technical docs, how no contention on RAM access is achieved in Pentagon 128K clone ? Looking at schematics it …
Does anybody know or have reference to technical docs, how no contention on RAM access is achieved in Pentagon 128K clone ?
Looking at schematics it has to be simple solution, probably king of interleaving, but I could not find any details.Joystick Interface with built in RAM expansion?Is there such a thing as a RAM pack with a joystick interface built in?
Is there such a thing as a RAM pack with a joystick interface built in?CAT!RAM and PUTRAMLast year sometime I posted a couple of routines to: * catalogue the 128k RAMdisk in BASIC; * move RAMTOP and the stacks from BASIC. CAT!RAM and PUTR…
... from BASIC.
CAT!RAM and PUTRAM are updated versions ... />
As CAT!RAM is in BASIC and is ... swapping around RAM pages to get at ... threshold.
CAT!RAM prints file name & type ...
The listings follow. CAT!RAM will work on any 128k ...Lot's of ZX Spectrum parts: RAM chips, ULA's, etcI have new stock of 100% tested parts. I even got my hands on a bunch of ULA's!! [IMG]http://benophetinternet.nl/hobby/sales/parts/IMG_6068.JPG[/IMG…
... ]
Prices:
- Ram chips: 4164, 4532, 4116, etc ...
