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Diodes placed the opposite way in +2A/+3 PCB'sI was just going to report this as a mistake in the schematics drawn by Guesser, but I saw a real board and realize that the schematics are right. […
... /> The diodes that isolate the address bus from the keyboard row ... /> MA0-MA7 also drive the address bus for non contended RAM ... long as for every CPU address that addresses non contended RAM ... is a unique DRAM address, and DRAM address are always supplied by ... -
MC LPRINT 23681Having problems with this routine to print large on the screen using LPRINT, it works ok in BASIC, but cant seem to get it to loop for some reason in…
... /> ld hl,72 ;start of address to poke
ld b ... /> loop ld (23681),hl ;poke address with hl
push hl ... -
Fastest way to delete a folder?Sometimes ccleaner is enough on some computers I work on, sometimes shift+delete while using Windows or Ubuntu is enough, sometimes rd folder /s /q (…
Sometimes ccleaner is enough on some computers I work on, sometimes shift+delete while using Windows or Ubuntu is enough, sometimes rd folder /s /q (while using Windows) or rm -r folder (while using Ubuntu) is fast enough, but I'm starting to encounter ... -
800+ Spectrum 128k & 48k original titles still availableHi guys, The original thread was a bit messy and has vanished from the front page, so rather than bump it, here it is again a bit tidier: All origi…
... a list of games and address so I can confirm P ... -
Copying data between memory banks in USR0 modeI am experimenting with Funky Fungus to load the majority of its data (levels, screens, music etc.) into memory banks 1, 3, 4, 6 and (partly) 7 by sw…
... and expanded to its uncompressed address (31232). Since with its total ... bank with a POKE [program address],[bank number] command before execution ... -
JSW2 - Game Loader DifferencesThere are three official releases of JSW2. I'm not counting the 'JSW2-128' version here as far as I'm aware this was not in any way 'official' as it …
... the 'basic' at a higher address, and then examined the loader ... -
128 BASIC-compatible way of loading BASIC as code?On a 48K Speccy (or from 48 BASIC or USR 0 mode on a 128K machine), one can do a silly trick like this: [code];; load a 4000 byte BASIC program ld i…
...
ld ix,23552 ; start address of system variables
ld ... -
BEEPER competitionHello, seems like ZX people are invited to send songs to ATARI party. :) ____________________________ Dear musicians, We would like to invite you…
... .
I suppose the address of sending in this case ... -
Understanding DRAMI think I am going slightly mad. My hardware knowledge has got more rusty than it should have done, and I am going to have to turn to the experts to…
... bits. They are addressed by address lines A0-A6 which allow ... bits. This time, we have address lines A0-A7 which allow ... will either be the row address, or permanent high/ permanent low ... 4532L chips) for the column address.
This effectively gives ... -
RCS HelpThis plea for HELP is related to the RCS screen handling routines thread. To further save space in the current crop of routines its looking like the …
... part that calculates the RCS address needs to be reversed. The ... routine takes an address in BC and plonks the ... -
SpecBAS 0.789 releasedHi all! Back with another SpecBAS release - this one's mostly just about sprites and bug fixes. One new addition I do quite like is the expression c…
... bug in the sprite frame address handling
PALETTE COPY could ... -
Another eBay question...I recently had to open a case because an item I paid for didn't arrive. To be fair, the case was all a bit quick! Following eBay's own links etc the …
... itme was delivered to my address. But it hasn't! I ... -
Help with calculating screen addresses[SIZE=3][FONT=Calibri]I?m having a bit of a coding session whilst at work so can?t spend too much time on my current problem. I?m sure someone on thi…
... inc or dec the screen address by one. Up and down ... -
SCREEN$ bug fixI've been using the SCREEN$() function recently for reading data off the screen rather than taking up space with an array and I got fed up with the s…
... $
bit 0,c ;DE=address, BC=length (0 or 1 ... -
LZ4 decoderI encountered the [URL="http://code.google.com/p/lz4/"]LZ4 compressor[/URL] a few weeks ago. Reading the [URL="http://fastcompression.blogspot.co.uk…
...
;;
;; Inputs:
;; HL: address of compressed data
;; DE ... : destination address
;;
;; Leaves HL pointing ... -
Quick fix for four joysticksHere's a quick modification to add four joysticks to any Speccy. This assumes you already have two Sinclair ports. [URL="http://joefish.co.uk/specc…
... . As you can see, its address decoding is fairly basic. It ... the leg that connects to address line A5 and disconnected it ... -
Copy 4Kb in Assembly?Here's an interesting problem: what's the best way to copy a block of 4Kb in assembly? The most obvious solution is to use [B]LDIR[/B]: [CODE] l…
... to copy 4Kb" would be "fastest routine under 512 bytes to ... -
Some *** accessed my home network?!?I'm not completely stupid (supposedly) but equally I'm hardly bordering on the all-knowing end of the scale either so I wondered if any of you more t…
... 4 and have its MAC address.
I've got ... tracing someone from their MAC address is a little slim (if ... -
z88dk and im2I set up a minimal IM2 mode so I can draw sprites for a laff [code] #include <string.h> #include <stdio.h> #include <im2.h> #include <stdlib.h> #in…
... , 195); // POKE jump instruction at address 0xd4d4 (interrupt service routine entry ... /> wpoke(0xd4d5, thread_manager); // POKE isr address following the jump instruction
Collision detection for interlocking shapes[SIZE=3][FONT=Calibri]I?m looking for some advice as I?m not sure how to resolve the following problem. I have an in memory structure that holds info…
... /> [SIZE=3][FONT=Calibri]Screen Address[/FONT][/SIZE]
[SIZE=3 ... =3][FONT=Calibri]22528 ; starting address[/FONT][/SIZE]
[SIZE=3 ... ; Add 32 to the starting address (so directly below the first ... create a list of attribute address for the two shapes I ...LOAD "" CODE - Blind Alleycame across [B]Blind Alley[/B] in the archives, and both tzx/tap versions only have Bytes header, no Basic loader with autostart - please, anyone, ho…
... do I find correct starting address for RANDOMIZE USR to make ... instruction inlay with a starting address and stuff...
what ...Another way to add audio input on a +2 - No more low level sound problem !Hi all, Last week, with 3 friends, we participated to a modelism / games / hobbies meeting, and we made a retro computing stand... (big succes, I'll…
... /> I wanted to have a fastest way of finding/loading games ...Switchable Timex Sinclair 2068 ROM modificationI have just finished a switchable TS2068 / Spectrum ROM modification and implemented it on two TS2068s. It uses a 32K EPROM chip for the HOME ROM and…
... switch. It controls the upper address bit on the two EPROMs ...that "listing variables during runtime" thingWell, I did eventually finish this, but with my meds playing up I don't have much time each day that I can spend at the computer, so it's taken rathe…
... routine was run from an address other than that at which ...Simple memory transfer routineI'm looking for a simple memory transfer routine that shifts 32 bytes of data from the address HL is set to 55143, I have tried using LDIR, but cant …
... bytes of data from the address HL is set to 55143 ...Peculiar joystick interfaceAt first glance, these two items look very familiar: [url]http://www.ebay.co.uk/itm/Sinclair-ZX-Spectrum-Vintage-Computer-Joystick-Interface-DK-Tron…
... high byte of the input address. This one surely doesn't ...A "generic" loader for +3(e)I've made this loader for 128k games in +3DOS. [CODE]dos_open equ 262 dos_close equ 265 dos_abandon equ 268 dos_read equ 274 dos_write equ 277 dos_s…
... /> ld h,(iy+2) ; starting address
ld e,(iy+3 ... anyway)
; 2 bytes starting address in memory
; 2 bytes ...Screenshot queryDoes anyone know how to save a screenshot in either of the following file formats: bak, cfg, dmp, doc, docx, jpeg, jpg, log, pdf, png, pp2, replay, t…
... Tanks to get my email address changed, (to prove who i ...Input magazines 1 to 39 in 3 binders - ?12 delivered in UK[B][NOW SOLD][/B] :) First 39 issues, held in 3 binders: [img]https://dl.dropboxusercontent.com/u/15218813/Input1.jpg[/img] [img]https://dl.dropbox…
... only dispatch to a UK address due to the heavy weight ...I'm rich! (not really)In the post today, as well as the odd Christmas card, was a letter purporting to be from a Mr Zhang at China CITIC Bank (a real person working at a r…
... having access to my home address though. He could have just ...
