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How do you work with fonts on speccy?just curious really.. I know c64 workings, and obv. the spec you draw direct to screen.. on 64 , you'd make what would be equivalent to UDG.. and sa…
... as the top half and lower-case characters as the bottom ... of time. It's screen memory is just one byte per ... -
Cool BASIC tricks and tips!Following on from Dunny's excellent suggestion of a compendium of BASIC tips + tricks, I believe it would be better to have a topic dedicated to it. …
... still takes place in the lower screen. I would be interested ... pitstop though). It seems my memory fails me now... I'll ... -
running dos version of dos X128 and real spectrumI have no experience of using dos(just windows) so how do I run thev dos versions of the above? line by line instructions azppreceated. Please incl…
... the sound rate to a lower value and/or pick the ... get on a CD. From memory, Z80 doesn't need to ... -
Brand new Horace GameWe could think on how should the next Horace Game be, taking in account that the past three are mixtures of old, well established classic arcade game…
... lower sample rate?[/QUOTE]
Yeah - a trade-off between memory ... -
The Sadness of my Decaying Speccies.I've been avidly collecting ZX Spectrums since the late 90's and whilst at the time of the late 90's and early millennium my Spectrums and associated…
... , EPROMs (where used) losing their memory contents, PCB tracks / IC socket ... easier/better done using modern replacement parts, yes please!
The Sadness of my Decaying Speccies.I've been avidly collecting ZX Spectrums since the late 90's and whilst at the time of the late 90's and early millennium my Spectrums and associated…
... saying, to be problems with lower RAM.
To amplify ... the edge connector, thus killing lower RAM and usually the switch ... in the process, all the memory is single supply and the ...SpecOS progressOk, As you can all see, I'm back - and I've been working away on SpecOS for a while now. There's a few videos, which you can see on my blog: [url]h…
... still amazed at how little memory chiptune generation and soundeffect took ... file that will form a replacement for the ?ngstr?m operating ...The Sadness of my Decaying Speccies.I've been avidly collecting ZX Spectrums since the late 90's and whilst at the time of the late 90's and early millennium my Spectrums and associated…
Lower RAM (4116) replacement is [I]technically[/I] a ... my own Speccy collection, most lower RAM still works, but keyboard ...SAM programmingHi Can anyone provide any example hello world or graphics/sprite printing style machine code routines for the SAM? I can't seem to find anything rem…
At Chris said, memory paging is key to getting ... it as it describes the memory map, hardware ports, etc.
lower 32K, which means disabling the ...The Sadness of my Decaying Speccies.I've been avidly collecting ZX Spectrums since the late 90's and whilst at the time of the late 90's and early millennium my Spectrums and associated…
... only drawback of this SRAM replacement, if such thing could be ... extra chips, apart from the memory chip itself (well, just one ... be taken into account: the memory chip should draw enough current ... the data lines from upper memory. Check the datasheet!
zx spectrum +2 troubleshootingHi There I am new here and I need some advise as to where to look for issues on my zx spectrum +2 it was working fine this morning .. then while pl…
... border color indicates you what memory bank is faulty (which I ... VRAM pages, and some more memory. This bank is contended. The ... other bank contains memory for the sole use of ... features, the memory map you have contains a lower RAM region (16K ...zx spectrum +2 troubleshootingHi There I am new here and I need some advise as to where to look for issues on my zx spectrum +2 it was working fine this morning .. then while pl…
... no's are the contended memory ?[/QUOTE]
According ... IC17-24 are non-contended memory, while IC25-32 belong to ... contended memory.
My schematic ... can assume that lower numbered chip corresponds to lower numbered bit. ...zx spectrum +2 troubleshootingHi There I am new here and I need some advise as to where to look for issues on my zx spectrum +2 it was working fine this morning .. then while pl…
... 16384 the 1st 16k of memory
16385-32768 - ... />
32769-49152 - contested memory
49153-65535 - ... to figure out how the memory addresses tie to the ... actual memory IC's
making my replacement excersize less ...Loading BASIC programs stored as "bytes:"Hi all, I have a question regarding loading BASIC programs, that I managed to save as machine code (I suppose) when I was a child, as a result of e…
Load the code at higher memory (i.e. 32768 )
...
ld (23659),a ; allow lower screen
rst 8 ; return ...Sinclairean A3[B]Sinclairean[/B], a new ZX Spectrum emulator written in machine code for x86-compatible, OpenGL-capable computers. Features: [LIST] [*]Fast machin…
... started dealing with the contended memory model I added Kendall's ... - hoping that the CPU core replacement would progress faster than ULA ...Beepola v1.01A new version of Beepoa, v1.01, is now available for download from:- [URL]http://freestuff.grok.co.uk/beepola/Beepola_v1.01.00.zip[/URL] (650KiB) …
... 's World, playing from contended memory at 25000.[/QUOTE]
Lower' song would sound much more ...Beepola v1.01A new version of Beepoa, v1.01, is now available for download from:- [URL]http://freestuff.grok.co.uk/beepola/Beepola_v1.01.00.zip[/URL] (650KiB) …
... by the pattern tempo setting (lower tempo value = longer notes for ... />
That's all from memory so the specifics of note ...what games are truly great regardless of format?the old comparisons things turns up here a lot favouring 1 machine or another.. but as I was listing "into the eagles nest" on a certain auction site…
... 2 and 3, as the memory pool for the level designer ... the PS2's much lower amount of host memory, since all three ...Print text in assemblyHello, a perhaps simple question: I would like to print a text string on the screen and I wonder how to do that in the most easy way? I seem to re…
... set up a position in memory with some string, e.g ... MC can use upper or lower screen.
So either select ... upper lower screen or use the right ... .
RANDOMIZE USR adres= lower screen
PRINT "" AND USR ...Do ULAs die?Thought I'd start this thread as people often think their ULA is dead, when it's actually the RAM or power circuits. Searching the forum in the futur…
... the day" was repaired, CPU, lower RAM and the ULA.
memory seems to be the prime ...emulatorsplease help can we see clearly which emulator emaulates which hardware is there any that has a pc function key for the mulitface nmi button and the +…
... the pc in a usb memory card reader please help - does ... with master&slave sd memory card readers please?
lower screen rez - cant the optimum ...designing a computerHi everyone! I am designing a 4 bit computer and i need some advice, is this a good instruction set? [CODE] BINARY OPCODE DESCRIPTION 00000 nop…
... is *slow* (especially at the lower voltage end). The time it ... something like 150 nanoseconds, from memory. You start running into problems ...Games in machine codeHi everyone, How do go about doing multiple shots like a machine gun, do you have to store every x and y position of each bullet? When you kill som…
... applications allocate far too much memory throttling the system... idiots ... else wanted to allocate some memory. Under normal circumstances, ... using most of its memory, was actually touching everything ... die is larger you get lower production yields.
Games in machine codeHi everyone, How do go about doing multiple shots like a machine gun, do you have to store every x and y position of each bullet? When you kill som…
... .
The things with lower non recurring engineering costs are ... memory, it would use a pair of static RAMs (one for lower ... and one for upper memory), instead of a ...Playing SID music on AY??Hello. Some time ago, with occasion of another thread, I was asking about possibility of making a very certain thing - a SID emulator for Spectrum …
... . This will require much more memory than original code, and much ... in some areas, though with lower quality (8-bit dividers if ...Spectrum 128K RS232 to PC serial cableIf you have read some of my recent posts then you will know that I am eager to link my Spectrum +3 to a PC. This will be done by wiring a standard PC…
... every BYTE of the Spectrum memory map while keeping BASIC ... of a storage/disc/tape replacement system.
What ... br /> Download data to 48K memory map providing download link is ... /> Upload data from full 64K memory map.
Catalog +3DOS formated ...ROM interface add-ons?Is there a summary description of various ROM interface add-ons, listing things like number of multiple ROMs holdable, compatibility with Interface 1…
... ) up to size 512kB. This memory can contain up to 32 ... 512kB rom as ZX rom replacement or can emulate rom via ...New tool: ZXBOOT.EXE[B]ASM[/B] is proud to present the first release of ZXBOOT.EXE: [url]http://www.4shared.com/file/NP-FVOSf/zxboot__beta_.html[/url] ZXBOOT is a comma…
... 49152 BYTES of the Spectrum memory map. The screen occupies the ... last to restore the repeated memory region used by 'part2'. 'Part1 ... how low 'part2' resides in memory.
I have improved ... than 47 BYTES as anything lower was ignored and stored as ...
