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Graphic equalizer m.c. program neededBack in the 90's I had a full-screen attribute equalizer that was simple, yet very impressive. We used to listen to Vangelis or Jean M Jarre by conne…
... 's I had a full-screen attribute equalizer that was simple, yet ... bar will not fit the screen.
Repeat cycle."
Tutorial - learn machine code in 30mins[B][I]Message from the moderators[/I] - bigjon has requested that readers' attention be drawn to a better version of this tutorial, one which is easi…
... onto the screen.
The simple way is the Attribute file, from ... 21 bytes further in the attribute file.
Insert line ... road 32 bytes (1 screen) down the attribute file.
ld ( ... the road down the screen we copy the screen attribute bytes to the ...128kefrom the scratchpad for the 128ke "Finally, reading from a non-existing port (eg 0xff) will give the screen/attribute bytes as it does on the 48K/12…
... (eg 0xff) will give the screen/attribute bytes as it does on ...Column and row numbers to attr address?[FONT=Calibri][SIZE=3]Can anyone provide me with a code snippet the will convert the column and row numbers into the screen attribute address. For ex…
... and row numbers into the screen attribute address. For example, if de ...ZERO Emulator - BugsI have been using Zero emulator to experiment a few routines in assembly, since it has a somewhat usable debugger. However I believe I found a few b…
... example block will clear your screen (pixels only128k Shadow Screen?When emulating the shadow screen in bank 7 should that bank be switched into address C000? If so, what happens if bank 7 is switched out without canc…
... the ULA can load a screen attribute byte and a byte of ...128k Shadow Screen?When emulating the shadow screen in bank 7 should that bank be switched into address C000? If so, what happens if bank 7 is switched out without canc…
... the ULA can load a screen attribute byte and a byte of ...What happens during a reset?I always used to wonder about this, but only thought a bit more about it last night when noticing after all these years what actually happens. Obvio…
... 'd see the "lines" on screen (value 02) shift right momentarily ... 02 being set in the screen attribute space too?What happens during a reset?I always used to wonder about this, but only thought a bit more about it last night when noticing after all these years what actually happens. Obvio…
... 02 being set in the screen attribute space too?
Oh ...SpeedloadersWhen was the first time they came out and who invented them. What was the general speccy user's and media reaction to them? Would be nice to have a …
... also used only a few screen attribute lines to show the status ... used 2/3rds of the screen to store the loaded data ... will see how fast the screen is loaded ;-)
[url ...Resolution & Memory Question ...Hi, I'm hoping someone with some experience writing an emulator, or a vast knowledge of all things Spectrum can help me answer the following questio…
... to 32767 is the display (screen + attribute) which is also the contended ...Resolution & Memory Question ...Hi, I'm hoping someone with some experience writing an emulator, or a vast knowledge of all things Spectrum can help me answer the following questio…
... to 32767 is the display (screen + attribute) [/QUOTE]
I'm ...Machine Code Routine of the weekHow about a thread that has a routine each week that is in [B]assembly language[/B] and is also described in great detail what the hell is going on …
... /> ; Prints characters directly to screen bypassing ROM calls
; ... back
; Set attribute
; -------------
PUSH HL ... LD A,H ; Convert to attribute address
RRA
screen attribute
POP HL ; Get ...Machine Code Routine of the weekHow about a thread that has a routine each week that is in [B]assembly language[/B] and is also described in great detail what the hell is going on …
... /> ; Prints characters directly to screen bypassing ROM calls
; ... back
; Set attribute
; -------------
PUSH HL ... LD A,H ; Convert to attribute address
RRA
screen attribute
POP HL ; Get ...Using ATTR detection in machine codeIs there a ROM routine that can be called that reads the ATTR value of a co-ordinate?
... an x,y into a screen attribute address (others on here will ... horiz & vert coord to attribute address
ld hl, ... ;number 0 to 24 down screen
cp 0 ;if ... ;return with hl pointing at screen attribute address
;
horizontalcoord ...Routine for clearing screenI was looking for a 'nice' way of clearing a screen of graphics in Z80. After a ridiculous amount of time mucking around, this is the best and most …
... /easier just to set the screen attribute values instead so that the ... /> It would achieve a blank screen but I know it's ... cheat though because technically the screen graphics are still in memory ...Routine for clearing screenI was looking for a 'nice' way of clearing a screen of graphics in Z80. After a ridiculous amount of time mucking around, this is the best and most …
... /easier just to set the screen attribute values instead so that the ... /> It would achieve a blank screen but I know it's ... cheat though because technically the screen graphics are still in memory ... if a large of the screen is blank it looks a ...Brazilian TK90X and TK95SpecEmu provides explicit support for Brazilian TK90X. Other emulators provide indirect support (perhaps the "Spectrum 48K NTSC" option in Fuse?). Al…
... , but when ULA accesses a screen attribute address, it will copy bit ... 5 from the attribute value.
[/LIST]
The ...Outrun Europa - In colourAre there any coder's willing to see if we can put the colour into this game as originally intended?
... it still executes all attribute routines. It moves ... screen, just in the last moment it substitutes the already read attribute ... some flashing attribute into playing area screen attribute memory. And ... break into debugger when screen memory is overwritten.
Outrun Europa - In colourAre there any coder's willing to see if we can put the colour into this game as originally intended?
... it still executes all attribute routines. It moves ... screen, just in the last moment it substitutes the already read attribute ... some flashing attribute into playing area screen attribute memory. And ... break into debugger when screen memory is overwritten.
Machine Code Routine of the weekHow about a thread that has a routine each week that is in [B]assembly language[/B] and is also described in great detail what the hell is going on …
... calculating the attribute address and writing the attribute, the attribute address is converted ... position back
; Set attribute
; -------------
PUSH HL ; Save ... ),A LD (HL),A ; Set screen attribute
POP HL ; Get print ...Machine Code Routine of the weekHow about a thread that has a routine each week that is in [B]assembly language[/B] and is also described in great detail what the hell is going on …
... calculating the attribute address and writing the attribute, the attribute address is converted ... position back
; Set attribute
; -------------
PUSH HL ; Save ... ),A LD (HL),A ; Set screen attribute
POP HL ; Get print ...Machine Code Routine of the weekHow about a thread that has a routine each week that is in [B]assembly language[/B] and is also described in great detail what the hell is going on …
... you can make a full screen attribute chess board? My code below ...Machine Code Routine of the weekHow about a thread that has a routine each week that is in [B]assembly language[/B] and is also described in great detail what the hell is going on …
... you can make a full screen attribute chess board? My code below ...Machine Code Routine of the weekHow about a thread that has a routine each week that is in [B]assembly language[/B] and is also described in great detail what the hell is going on …
[QUOTE=Dr BEEP;639971]Not the same values[/QUOTE]
It fulfils the spec... :p
[QUOTE=R-Tape]
What's the shortest way you can make a full screen attribute chess board?[/QUOTE]Tutorial - learn machine code in 30mins[B][I]Message from the moderators[/I] - bigjon has requested that readers' attention be drawn to a better version of this tutorial, one which is easi…
... onto the screen.
The simple way is the Attribute file, from ... 21 bytes further in the attribute file.
Insert line ... road 32 bytes (1 screen) down the attribute file.
ld ( ... the road down the screen we copy the screen attribute bytes to the ...Brazilian TK90X and TK95SpecEmu provides explicit support for Brazilian TK90X. Other emulators provide indirect support (perhaps the "Spectrum 48K NTSC" option in Fuse?). Al…
... , but when ULA accesses a screen attribute address, it will copy bit ... 5 from the attribute value.
[/LIST]
The ... as bit 7 of an attribute from screen because the ULA leaves ... as bit 5 of an attribute from screen because the ULA leaves ...ZX7: an "optimal" LZ77 packerAbout 20 years ago, I started a M.Sc. in Computing, planning to work on data compression. Although I quickly changed to another subject for a number …
... attributes directly to their proper screen addresses. In this case, ... better to fill the screen attribute area with same INK/ ... attributes separately to their proper screen addresses. This option may ... contains all bytes from first screen column (in pixel order), ...ZX7: an "optimal" LZ77 packerAbout 20 years ago, I started a M.Sc. in Computing, planning to work on data compression. Although I quickly changed to another subject for a number …
... attributes directly to their proper screen addresses. In this case, it ... look better to fill the screen attribute area with same INK/PAPER ... unpack this directly into the screen memory. There is simply no ...A quick newbish questionI'm reading through 'mastering machine code on your spectrum',as kindly posted by Mr bert on this forum. Correct me if I'm wrong from what i read,bu…
... /> I read something about the attribute file and using the area ... -22527 is the screen.
The screen is made up ... the Attribute area which is where the colours are put on screen ...
Attribute area 22528 - 23295.< ...
