-
SE Basic IV Buffy v4.1 source (WIP)I've been doing a major refactor on the SE Basic source and I'd appreciate a code review from anyone who has time to look at it. I've almost certainl…
... loop
out (ula), a ; write port
ld b, 164 ... loop
out (ula), a ; write port
ld b, 55 ... loop
out (ula), a ; write port
ex af, af ... ; store A in C
and %00000111 ; preserve border color
or ... -
Experimenting with turboloadersHello, My first post, having lurked here for a while. I'm a lifelong computer nerd, Spectrum fan since childhood in the eighties, and have recently…
... for me to write loaders that are embedded in REM statements).
;; same as searching border
endm
macro ... :equ 23
macro border
;; in order for the logic described ... -
NEW GAME: Elixir VitaeOnly 2 weeks after Janosik I have a pleasure to announce my next creation - a logical minigame called [B]Elixir Vitae[/B]. Just like another Polish …
... a buffer. Then you could write simple sprite routines, instead of ... them with black attributes in the bottom border. When you want to ... double-width columns of multicolour. In your unrolled code you could ... the side indicators are stored in HL and HL' so they ... -
NEW GAME: Elixir VitaeOnly 2 weeks after Janosik I have a pleasure to announce my next creation - a logical minigame called [B]Elixir Vitae[/B]. Just like another Polish …
... 731389]Then you could write simple sprite routines, instead ... them with black attributes in the bottom border. When you want ... br /> Each repetition takes 224T in Spectrum 48K (starting 15891T after ... interrupt), 228T in Spectrum 128K/+2 (starting ... -
SE Basic IV Buffy v4.1 source (WIP)I've been doing a major refactor on the SE Basic source and I'd appreciate a code review from anyone who has time to look at it. I've almost certainl…
...
org 0x2294
border:
call find_int1 ; get ... parameter
cp 8 ; in range?
jr nc, report_k ... ordinate
sub b ; in range?
jp c, ... plot_end:
ld (hl), a ; write pixel byte
jp po_attr ... -
SE Basic IV Buffy v4.1 source (WIP)I've been doing a major refactor on the SE Basic source and I'd appreciate a code review from anyone who has time to look at it. I've almost certainl…
... ld (vars), hl ; store address in
ld (prog), hl ; ... ld (bordcr), a ; set BORDER color
ld (attr_p), a ... AY
call sound_2 ; write to data register
ld ... + _vdu_flag) ; signal lower screen in use
ld de, rpt_mesgs ... -
SE Basic IV Buffy v4.1 source (WIP)I've been doing a major refactor on the SE Basic source and I'd appreciate a code review from anyone who has time to look at it. I've almost certainl…
... /> rrca ; in remaining
... (bordcr) ; border color to A< ... /> ldir ; write bytes
... -
What would you do with four joysticks?Anyone got some inspiring ideas for four-player games, or twin-stick two-player games..? I can think of, for four players: [I]Warlords[/I] (Atari) […
... . I might need to re-write the sprite routine I have ... multicolour sprites during the top border (typically 12x12 sprites that can ... player's 'home' could be in a corner of the screen. -
Clashbasher a new interface to reduce colour clashI've been working on this for a while now. [IMG]http://markamy.uwclub.net/cauldron.JPG[/IMG] Basicly its an add on for a 48k spectrum, which reinte…
... stereo beeper sound as discussed in this post.
[URL=" ... with all the display addressed in uncontended memory and even by ... clashbasher logic just sees the write to the address so it ... the original spectrum display so border effects now display correctly. I ... -
A new full-screen bicolor engine called NIRVANA[I]OK, there's something I need to clarify first: Nowadays if you write [B]"multicolor"[/B] everyone assumes it refers to "multicolor 8x1" (an attri…
... br />
Nowadays if you write [B]"multicolor"[/B] everyone assumes ... on screen during the upper border, that you can use freely ... 32x24), assuming an extra character border in all directions. Considering it's ... games to have this extra border, I'm using the ... -
Documentation for SP1 for Z88DK?(I was going to post in [URL="http://www.worldofspectrum.org/forums/showthread.php?t=11729"]the other thread[/URL], so if a mod thinks this should go…
... to hold the RB (right border) sprite draw functions. These functions ... special, you can also write your own sprite draw code ... (what is done now in sp1_UpdateNow is draw background followed ... by sprites in plane order, with various ... -
Documentation for SP1 for Z88DK?(I was going to post in [URL="http://www.worldofspectrum.org/forums/showthread.php?t=11729"]the other thread[/URL], so if a mod thinks this should go…
... that zx_border() could change the border colour without causing an audible ... . I assume if I read IN the state of #FE, AND ... then OR the required BORDER color and write it OUT again I ... -
Documentation for SP1 for Z88DK?(I was going to post in [URL="http://www.worldofspectrum.org/forums/showthread.php?t=11729"]the other thread[/URL], so if a mod thinks this should go…
... . I assume if I read IN the state of #FE, AND ... then OR the required BORDER color and write it OUT again I ... -
Documentation for SP1 for Z88DK?(I was going to post in [URL="http://www.worldofspectrum.org/forums/showthread.php?t=11729"]the other thread[/URL], so if a mod thinks this should go…
... . I assume if I read IN the state of #FE, AND ... then OR the required BORDER color and write it OUT again I ... to know what the current border colour is when outputting sound ... -
FZX Driver for z88dkAn fzx library for z88dk can be downloaded [URL="https://drive.google.com/file/d/0B6XhJJ33xpOWM2hWNjAxMVkxaEk/edit?usp=sharing"]here[/URL]. The libr…
... certain characters have a "tail" in the lower left (using kern ... /> Now suppose you want to write the following text:
[code ... a more sophisticated driver too. In the meantime, the safest way ... only 2, since the window border would probably hide the extra ... -
A new full-screen bicolor engine called NIRVANA[I]OK, there's something I need to clarify first: Nowadays if you write [B]"multicolor"[/B] everyone assumes it refers to "multicolor 8x1" (an attri…
... you want in your own program time in the lower border. And if ... want to write a queued character renderer than operates in a fixed ... time frame during the top border you ... 'll probably have to write it yourself ... -
Clashbasher a new interface to reduce colour clashI've been working on this for a while now. [IMG]http://markamy.uwclub.net/cauldron.JPG[/IMG] Basicly its an add on for a 48k spectrum, which reinte…
... with the spectrum timing so border effects and multicolour timing are ... br />
when in normal mode if you write to an attribute ... character squares remain in the mode they were in when last ... a character square is displaying in normal mode underneath the ... -
Getting aquainted with the IF1bisToday, fifteen days after dispatch, the IF1bis arrived at my door. In perfect order. No customs, no TVA and no handling fee involved. The arrival of …
... (191),A ;enable write
OUT (255),A ;page in IF1
OUT (254),A ;sound + border show
CALL 8020 ;test ... -
Border Tron vector tableI've been trying to use the Border Tron border creator, but the vector table is created where code to my game is at (FE00 I think), how would I go ab…
... Simon Brattel's code does in Dark Star (I must' ... Simon for "prior art" in your little bit of code ... I couldn't see any border effects. I even looked on ... of mystical knowledge to me in #spin is just self- ... care less. Just because I write a throwaway comment on a ... -
A new full-screen bicolor engine called NIRVANA[I]OK, there's something I need to clarify first: Nowadays if you write [B]"multicolor"[/B] everyone assumes it refers to "multicolor 8x1" (an attri…
... get printed during the top border, that the programmer can use ... ) a sprite during the bottom border then prepare the UDGs to ... top border.
Or they could compute the differences in the ... /> I could write my own code to run in the top border, but ... -
A new full-screen bicolor engine called NIRVANA[I]OK, there's something I need to clarify first: Nowadays if you write [B]"multicolor"[/B] everyone assumes it refers to "multicolor 8x1" (an attri…
... ]I could write my own code to run in the top border, but ... ]NIRVANA[/B] uses the top border to draw 8 btiles, controlled ... want to use the top border to do something different, you ... -
Why are multicolour engines only able to be made now?Now I'm no programmer, but, how come multicolour engines are only being created/designed now? I know there were Rainbow Graphics used in games in the…
... each line to re-write the colours as the ... entire set of attributes in first) and you're ... something useful during the top border; whatever you do you ... number of tiles or sprites in this period.
in that case you may switch ... -
Programming again with the ZX SpectrumI am going to take a blast at programming for the Spectrum again. Its bee a long time since I have done this. I need to refresh my memory and maybe l…
... d suggest going straight in with machine code. ... examples, and get stuck in. On a PC, ... />
Remember in BASIC if you type PRINT ... the border colour from machine code, and write your ... own character-print routine instead of using the one in ... -
Pac-Land: can be coloured?All versions of this game are full coloured, but not the Spectrum version. It has large sprites, but maybe the scroll is too fine to make a coloured …
...
As for placing it in the game:
... /> [/B]
2. In the arcade, the lives and ... might look great in other places, like in the building ... square border around cherry[/B]
4. In the ... the game and write them back in. I thought about ... -
Scrolling Bi-Colour Engine for 4-Player GamesJust putting this code up for people to have a look at. Far from finished. Should simply compile and run a bit of a demo. Only good for 128K and +…
... 16x16 sprites during the top border. Horizontally with 8-pixel resolution ... slightly deformed one pixel shorter in the body to better ... 00001111 background, draw the scenery in ATTRibutes, but also draw ... several more. You just write your code and graphics to ... -
Pentagon floating bus timingI wanted to take a little break from working on the ZXDS UI yesterday, so I added support for Pentagon timing instead, so I can finally enjoy the lik…
... with vertical lines on the border aligning with the main screen ... meant for a while to write a post on WoS on ... few remaining inaccuracies in the Pentagon emulation (nothing major ... earlier (essentially, due to differences in their architecture), so no-one ... -
Another "untested" dead spectrum...Hi, I'm looking for some suggestions on a faulty Spectrum I have picked up. I'll need to wait until tomorrow before posting pics, but the screen is …
... br /> [/QUOTE]
Border is white = most probably, CPU ... that would indicate a failure in the CPU, ROM, or.... ... RAM is a failure in the multiplexers that give ... making the CPU to write data to a very ... this: hold the CPU in reset state (by shorting the ... -
Totally random idea for the hardware nuts to exploreWhen it comes to multi-player games, how hard would it be to generate a second display from a single Speccy, instead of trying to link up machines, s…
... top/bottom border time, page in the alternate screen, write to it, then ... set it on show, then write over it with what you ... get a lot of tearing in the graphics though if you ... -
A new full-screen bicolor engine called NIRVANA[I]OK, there's something I need to clarify first: Nowadays if you write [B]"multicolor"[/B] everyone assumes it refers to "multicolor 8x1" (an attri…
... run at 60Hz, the upper border and total interrupt times are ... POKEs for Timex models, and write a new engine version for ... ROWREPT is referenced five times in each identical LINREPT block ( ... 110 bytes compared with patching in ROWREPT values after decompression? ... -
Spectrum screen layoutSeeing the thread on displacement I was wondering why the spectrum had the stupid screen split into three sections and the addresses for each section…
... CPU execution only during the border areas (horizontal and vertical) ... 7-bit column. To read/write memory, you select the row ... buffering would be required in the ULA, in which space was ... would suspect that early experiments in development of the Spectrum ...
