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Hacking the O.C.P Full Screen Editor/AssemblerIf you have been reading my posts recently then you will know that I am eager to have the sourcecode I wrote for the Spectrum during the period 1988 …
... where the sourcecode started in memory - 89EDh. The next job was ... by three fields each starting with a one BYTE character count ...
exx
push hl
push ix
push iy
ld ... />
Here is a screenshot with RED border timings to show ... -
SPIN's breakpoints - an overviewAs quite a few people have been asking how to set breakpoints on memory write etc. in SPIN, here's a description of the way the breakpoints work. Get…
... /> [*]Edit menu -> Copy memory block / Fill memory block (non functioning)
[*]Edit ... - TAB key replaces entire selection with TAB char (0.666 and ... -
Transferring games into MicrodriveLast week a big pack of empty microdrive cartridges arrived, and now I'm ready to playing with my little microdrive equipped speccy. One of my aim w…
... /> db 32,0F9h ; jr nz,.fill
db 35 ; ... /> ; Z80 code to restore repeated memory (17 BYTES).
db 16,0FCh ; djnz .fill
reg_hl db 33 ... />
; Prepare .SNA file with Z80 code.
i am currently listening to........as i couldnt seem to find the old one, i didnt look that hard :P ive started a new one right after somebody asked me for some slayer ive rediscovere…
... br /> Salt N Pepa - Push It
Salt N Pepa ... Night
Scarlet Fantastic - No Memory
Shakatak - City Rhythm< ... Thomas Dolby - She Blinded Me With Science
Thompson Twins - ... Whitney Houston - I Wanna Dance With Somebody
Whitney Houston - ...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…
... verified it is filled with a specific pattern of ... last to restore the repeated memory region used by 'part2'. ... a repeated fill so that area of memory would have ... form and fill the rest of the memory up to ... There is a problem with this method as final ...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…
... COPY
129..255 = REGION FILL
[/code]
... : Z80 code to restore repeated memory (17 BYTES).
< ... hl
.fill: ld (de),a ; FILL repeated region
inc ... de
djnz .fill
jr .start ; Exit with B = 0
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…
... : ld bc,07FFDh ; Remap memory
pop hl
... /> ld hl,14446 ; Fill last section with 255
ld bc ... --------------------------------------------------------------------------
; 12 BYTE memory remap table.
It's snowing!Yes I know all you northerners have had snow for a week but down here in London it's a very rare thing!
... , was superb. Now with driving/ice etc its ... in and try to push the sledge with our weight, nothing ... we (very embarassed) walk home with the sledge.
memory from my past to go along with my ' ... A commando bike is not a BMX' memory ...It's snowing!Yes I know all you northerners have had snow for a week but down here in London it's a very rare thing!
... , was superb. Now with driving/ice etc its ... in and try to push the sledge with our weight, nothing ... we (very embarassed) walk home with the sledge.
memory from my past to go along with my ' ... A commando bike is not a BMX' memory ...Why doesn't my loop work?Can anyone help me understand why my loop doesn't work? Is it to do with how DEC HL affects the flags? [code] ; Read 32k bytes from port 191 as fa…
... stay away from using contented memory (both for code & ... a row), you could fill a read buffer with INI instructions (and ... into the same buffer. Perhaps with a few bytes of clearance ... to do 5K consecutive readings (with 16 clockcycles interval), and after ...Why doesn't my loop work?Can anyone help me understand why my loop doesn't work? Is it to do with how DEC HL affects the flags? [code] ; Read 32k bytes from port 191 as fa…
... stay away from using contented memory (both for code & ... a row), you could fill a read buffer with INI instructions (and ... to do 5K consecutive readings (with 16 clockcycles interval), and after ... data + 5KB remainder still filled with INI's.[/QUOTE]
< ...Z88DK/SP1 library u_malloc() questionHi All, It may possibly be more appropriate for me to post this on the Z88DK forum, but I know quite a few WoSSers have used Z88DK, so here goes:- …
... do a large scale game with the memory left.
[/quote]
memory versus spritepack for a ... locals last can allow shorter push/pop sequences to access them ... of use goals do come with a memory penalty. 'Advanced methods' are ...Z88DK/SP1 library u_malloc() questionHi All, It may possibly be more appropriate for me to post this on the Z88DK forum, but I know quite a few WoSSers have used Z88DK, so here goes:- …
... contended memory is a fact of life for games which fill the ... games I'm working on with just 5 small sprites, it ...Supertest 128 - Loader QuestionI wonder if someone could explain (in simple terms please) :) , the purpose of the switch code. I see what is doing (going to 48k mode via spectrum)…
... think I started with a .TAP file containing the memory banks, split ... 08E10h
;
diewith:
push af
ld iy,DDOFF ... 0
dodos: push af
push bc
ld bc ...
call pciy
push af
push bc
ld bc ...Converting TRD-Dos into TapHello, there are still many programs appearing on TRD-Dos or SCL format and users of normal Spectrum cannot run them. Of course I know about emulator…
... a breakpoint on all memory from 5D00 to FFFF
memory to find somewhere to ... it:
[code]PUSH HL
POP IX
with a call to this ... using the emulator's "save memory" function, then open the ...yeah - unix for zx spectrumI started a new hobby project. An operating system for ZX Spectrum. A unix clone. Talked to my friend about it and he asked me what if after I'm done…
... known environment to start with. Here are my ... is memory manager. Tomorrow I'll start playing with malloc ... ().
LINKER SCRIPT
[code]
MEMORY ... /> *(.text)
_etext = .;
FILL(0x00)
. = 0x4000;
} & ...Where's it all going?[Rerouted from 'Assembler Intricacies' in Development Forum] [QUOTE=Timmy;506104]I don't think we're in disagreement here. As I've said it's a niche…
... open up again. With a lot of memory (virtual or real ... asm. As amount of memory increases and more sophisticated ... ? If we want to 'push the spectrum to its limits ... -off is more in memory consumption but speed will ... require a lot of memory (as has been pointed ...petrol / gas priceswith what is currently going on with fuel prices.. ?6 a gallon (I'm metric so means nothing to me) whe you started driving how much was petrol a lit…
... cost just under ?70 to fill up my car about a ... for now on, either motor/push bike. The motorcycle gets over ... just this time of year with all the ice four wheels ...yeah - unix for zx spectrumI started a new hobby project. An operating system for ZX Spectrum. A unix clone. Talked to my friend about it and he asked me what if after I'm done…
... /> Another important thing related to memory management is relocation.
... />
The serial interface with connectone wifi module implements TCP ... pointer' used by malloc with the tasks's heap ... /> 82 push af
83 push bc
84 push de
Recursive 4-way floodfillHi guys) Shortly, I wanna find out whether there's a way to some object. Perhaps some of you have already encountered such an issue which is relativ…
... into PROGRAM' to my overflown with writings notebooks ;)
So ... : PRINT TAB 5;"BASIC RECURSIVE FILL"
10 CIRCLE 128,88 ... +1
1050 RETURN[/CODE]With a little modification it should ... BASIC atm. Yet if my memory serves me right then there ...Recursive 4-way floodfillHi guys) Shortly, I wanna find out whether there's a way to some object. Perhaps some of you have already encountered such an issue which is relativ…
... fill routines above are depth-first recursions and use a memory ... a full screen fill is happening is ... -first recursion whose memory use is proportional ... 2) memory space for the others). With as little ... as 300 bytes of stack space it can fill ...Gigascreen - programming guideDoes anyone know of a programming guide for the 128K gigascreen screen mode, specifically a persistence colours table, some code (pref. C level or BA…
... looping back here
PUSH AF ;Store numbers on the ... 'll get messed...
PUSH HL ;...around with.
LD ... of a row
PUSH HL ;Copy HL (attribute ... ;View screen 1, with screen 1 in high memory
HALT ; ...Calculating the address of a pixel?Hi Folks, Is there an easy/quick way of calculating the memory address of a pixel? So for example, if I wanted to "plot" pixel at screen coordinate…
... QUOTE=Alcoholics Anonymous;511112]Save memory for who? Surely not the ... other manufacturers made available models with less memory that could be expanded ... block copy operations or even PUSH to the display.[/QUOTE]
I can use PUSH as easy as i can ...Calculating the address of a pixel?Hi Folks, Is there an easy/quick way of calculating the memory address of a pixel? So for example, if I wanted to "plot" pixel at screen coordinate…
... a real Spectrum would fill me with some trepidation. Working ... 32 column screen and with no debugging options would ... BASIC. Couple that with the 64K RAM disk ... 1 million times more memory than my 1K ZX81! ... there must be some serious memory waste going on.
Fao dmboozefreekIf you've been following the news recently, you know that even Mr. DMBooze Freek's horoscope says he's cocky. However, you might not know that DMBooz…
... , and subversion, it would fill an entire page and perhaps ... Nevertheless, I can state with absolute certainty that his childish ... , DMBooze can replace such people with compliant, DMBooze-controlled, and, ... me to erase from my memory the feelings of weighty ...Petrol Station FoolsWhy is it that when queueing for petrol pumps at the petrol station that some people will stubbornly not go to the pump if the nozzle is not on the s…
... of phones in a room with a stochiometric mixture of petrol ... don't they insist we push our cars away from the ... ..last night I went to fill up and the gas pump ...ZX Spin debugger conditionsHi, Are there any instructions on using the Spin debugger anywhere? There seems to be an option to set conditions on breakpoints but I can't find it…
... any chance to have implemented fill memory in Spin? Or maybe somebody ... ]
You can fill the memory with a byte of your choice ... in the assembler with the ... [/code]Will fill the screen and attributes area with 6912 0' ...ZX Spin debugger conditionsHi, Are there any instructions on using the Spin debugger anywhere? There seems to be an option to set conditions on breakpoints but I can't find it…
[QUOTE=FrankT;521098]You can fill the memory with a byte of your choice in the assembler with the ds command.
[/QUOTE]
Thanks FrankT - nice idea!Push/Pop data copyingWe all know that stack pointer cheese and push/pop is faster to move data than LDIR - which in turn is slower than unrolled LDI's anyway. I rewrote …
... the same speed as a PUSH/POP copy. But there is ... you want to synchronise with the contended memory cycles, so as not ...
