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UDG tricks?I always enjoyed using [URL="http://www.worldofspectrum.org/ZXBasicManual/zxmanchap14.html"]UDGs [/URL]for the 'sprites' in my games, when I coded th…
... a font saved to disk with fontograph, to no avail. Another ... large emphasis of addressing the memory directly with Peek and Poke. Pretty ... if I want to mess with graphics in a fancy way ... I know I can define with data statements without too much ... -
48K: Half of copyright message in the middle of the screen?!Issue two. Has 74LS08 over the Z80, but the ULA is 5C112E-3 (I think this should be a 5C102E??? - I have one, but I'm not sure if it is working, at l…
... tester in the memory chip. I ran memory tests with both and both ... : "This spectrum has 48K of memory in working order".
with 16K, it works. Once upper ... -
48K keyboard issue48K issue 3b reads keys without... keyboard. Looking at recorded keys, problems seems to be with one data line - D1. It happens after a while since p…
Sounds like a plan. There was a user on here last week who had the opposite problem (keyboard locked up), caused by faulty upper memory interfering with a data line.
B -
Turning on and off internal speaker?Just wondering if this change could be done. Would it be possible to install just a switch so that one could turn on/off the sound coming from the i…
... some type of cross signaling with the motherboard or keyboard resulting ... screen. However when using it with a trusty 1084S monitor it ... mod I was left with a hole to fill with something useful :lol ... -
Donkey kong Jr II (...sort of)Well as my other games, this is another OPEN-AGD game not in its final form (I am not completely happy about the gfx) and there is a bug which mak…
... " to look for the screen with the BANANA sprite on it ... I approached the end of memory the AGD codes locked up ... (I spent too much memory dealing with gfx and animations i guess ... water for example a waterfall with flows of different direction and ... -
Bomb Munchies - preview releaseBomb Munchies Preview release Version 12th Jan 2014 [URL=http://s979.photobucket.com/user/MatGubbins/media/bmsix_zpsc33279a2.gif.html][IMG]http://i…
... pins on parallel connector - with small adapter is possible ... 5F. Interfaces that collide with divide and kempston can't ... also all interfaces with own external memory. So with DIVIDE + RTC module ... only,slave kempston or communication with joypad
#03( ... -
Are OpenSE BASIC and SE Basic IV incompatible with Plus D?Hello, I'm considering Andrew Owen's impressive [url=http://sourceforge.net/projects/sebasic/]OpenSE BASIC[/url] and [url=http://cheveron.github.io/…
... 's no BASIC program in memory. But with these ROMs (latest versions ... tried also the Interface 1 with microdrives, and they work fine ... /> Is the Plus D incompatible with OpenSE BASIC and SE Basic ... 's designed to be compatible with esxDOS but the requirements are ... -
Issue 6 repair with a twist...(Starting with a slight grump - the forum ate my first attempt at this so this'll probably end up being a bit terse :)) I got a Issue 6 48K machine …
Oh, good point about the memory fill direction. I'll see if ... -
Which did you own - Atari ST or Amiga?[I meant to make this a poll, but I clicked the wrong button (my own fault, I'm supposed to be writing a report for work, and it's so boring, so I ma…
... . A breadboard type of thing with push switches, and light bulbs in ... -
+2b borkedwell not completely I get this when I hit the NMI on my multiface 3 (so that negates the use of my divides too), the yellow/green stripes flash [IM…
... looks somewhat similar to the "memory filling with 0x0039" when the rom ... is missing, but with different values.
What ... -
+2b borkedwell not completely I get this when I hit the NMI on my multiface 3 (so that negates the use of my divides too), the yellow/green stripes flash [IM…
... looks somewhat similar to the "memory filling with 0x0039" when the rom ... is missing, but with different values.
What ... -
Testers for new z88dk clibA long (long, long, long) time ago a few people offered to help test the new clib in z88dk. Much time has passed since then and I won't hold people,…
... br />
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; memory model ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
memory model with ... -
Edge Grinder, how would YOU do it?I always meant to post about this and AndyC reminded me in the 'vs' thread in games. [QUOTE=AndyC;808887]The thing I love about threads like this is…
... thing as R-Type, just with pixel-positioned pre-shifted (and ... give-away someone's using PUSH as there are only so ... so it could be done with PUSH, you could do something letterboxed ... 25fps PUSH scroll on 128K only, synching the scroll renderer with screen ... -
New MEMFACE projectMEMFACE is my old project, but never finished. Now is PCB done (at the post office) and I write firmware for CPLD. MEMFACE is interface with external…
... modes?. Could you run cpm with it?[/QUOTE]
... MEMFACE will compatible with +2A/+3 computers and accept ... support own allram modes with external memory sram (with selectable write protect). Theoretically ... beta-disc(tr-dos) with FDD... -
RobikHello to all, Is anyone experienced on this russian clone? I have one at hand with corrupted screen (but it boots and replies to keyboard inputs so …
... a stuck bit in every memory location, as a RAM failure ... don?t know if the memory work with three voltages (+5V, +12v ... and -5V), or only with one, (+5V), check it the ... -
+3e simple ide interfaceHi guys, I want to make a +3e with my +2a. I'm thinking of making the simple 8bit ide interface (internal) and connecting it to a 40 pin ide to sd r…
... the MMC adaptor that interferes with the operation of the above ... I can just open the memory card with Stowsaw without having to ... -
Trial version of CharAde graphics engine for Sinclair BASICA trial version of my <span style="font-weight: bold;">CharAde</span> graphics engine for Sinclair BASIC is now available. It consists of a block of …
... obvious that 'clear screen' means 'fill with spaces'.
Note that ... they don't stand out with different colour PAPER.
EmuZwin 128k banks in assembler Having looked at the assembler help file " ORG [{ RAMn | ROMn },] #target_address [, #dest_address ] Defines target assembling address and ta…
... 0 (to keep the 128k memory available), assembled the code, ... fine.
Messed around with the Bomb Munchies code so ... now playing happy
together with interupt BEEPer fX.
... load/save routine - basic memory permitting with my mate VAL.
< ...New NIRVANA+ feature: wide tiles!The size of each bicolor tile in [b]NIRVANA+[/b] is 2x2 characters (16x16 pixels), like this: [img]http://i60.tinypic.com/mw358y.png[/img] [i]* M…
... same time as doing so with the screen pointer), then use ... is doable with this, as well. Also, combining PUSH-scroller and regular ... most frequently used tiles with PUSH, the rest with LD. Hope one day ... a good method to use with a PUSH-scroller, IIRC you can ...r-type in development for the sam coupehttp://cookingcircle.co.uk/ we need z80 coders graphics artists and audio this is the amstrad cpc 6128 version: https://www.youtube.com/watc…
... is easier or slightly faster with push and using the stack pointer ...The Olde Wooden Telly Thread[img]http://www.oldtechnology.net/images/pyect203.jpg[/img] This thread is for those that remember when Tellies (or is it Tellys) were made of woo…
... an old wooden portable TV with a dial - I think it ... plastic ITT Nokia portable with push buttons and it became my ... of that little wooden one with the dial, though. It broke ...How did bank switching work on the 128K Spectrums?I'm new to Z80 and ZX Spectrum. So I was wondering how the 128+ models managed to work with more than 64K of memory? I'm somewhat familiar with h…
... the top 16k of memory as already mentioned. That ... a full 64k ram memory space with the bottom rom ... is another major problem with 128k banking in that ... contended. On the spectrum memory access to video ram ... located in a contended memory bank (this means the ...Mackarel - one exe to turn .ihx + .scr to a .tapSorry if this feels like spamming so soon after mkloader, but I'm honestly surprised how fast I managed to put this together. Introducking Mackare…
... needed, not hardcoded and patched with nops. SP is also ... data to the bottom of memory space if you want (mackarel ... data to the top of memory space (with no compression attempted)
memory map:
[code]
Memory : 0 2 ...128K programmingDoes anyone know any good resources on assembly programming for the 128? All I'm after is an "idiot's-getting-started-guide" on how to utilise the…
... at the top of memory then you push something on, change the ...Help! I'm learning Machine Code...Having decided to take the plunge and learn to machine code a while ago, I have started in earnest using the much recommended 'Mastering Machine Code…
... "]Secondly, when specifying a memory location with a 16-bit constant, you ... , it will likely jump to memory location #469c![/quote]
Memory" statement, and then upon rebooting ...Bomberman Demo (Nirvana+)Greetings, I want to share with you a bomberman clone, using Nirvana n z88dk, that I'm working during my free time. I really love to get your f…
... sheet but I run into memory issue. With the bomber man nes ...How would you approach parallax?So ... there is this trick by Joffa that we all know...of waiting for the ULA to reach certain pattern on the screen using the IN command. And then s…
... other things, and works well with PUSH-based too
But ... everything (Joffa's games, other PUSH-based)
- For LD-based ... that uses a combination of PUSH and LD based drawing (realtime ... to be a little faster with what I hadHow would you approach parallax?So ... there is this trick by Joffa that we all know...of waiting for the ULA to reach certain pattern on the screen using the IN command. And then s…
Thinking of something like [i]Hysteria[/i], is it quicker to pixel-scroll a chunk of scenery in-place, then copy it to the screen (I guess with PUSH/POP), or can it be done faster by copying it as you step through to scroll it?My speccy dev..Hi. I'm not currently working on anything for the speccy. So far I've done a few little games, a couple game engines, toolchain that lets me do (a…
... still a bit too busy with other things lately that I ... that was already stretching the memory limit with everything. I'd probably ...
