-
Interrupts details questionSuppose I am writing a game and I want to use interrupts to measure time, draw the screen without flicker, maybe to poll keyboard etc. What kinds of …
... (0=IM0/1=IM1/2=IM2)
.byte 4 ;BorderColor ... address again
ld a, h
and 8 ; check ... inc hl
ld a, h
and 8 ; test if ... with lower 3 bits of h.
; It effectively "linearizes" ... ld l, a
ld h, b
pop ... -
IM2 Machine Code Sprites Example Code Using Char Based SystemFurther to my earlier post, here are sprites running using char method with IM2 driving it Note, for 48k spectrum using TASM [code] ; ***********…
... L=10
LD H,0FAh ; Point H to FA00h, so HL ... 54h
INC H ; Increase H, thus moving 256 bytes forward ... />
; 0FD00 - 0FDFCH Reserverd for IM2 Interrupts
ORG 0FDFDH ... -
IM2 Machine Code Sprites Example Code Using Char Based SystemFurther to my earlier post, here are sprites running using char method with IM2 driving it Note, for 48k spectrum using TASM [code] ; ***********…
... br />
INC H ; Increase H, thus moving 256 bytes ... br />
INC H ; Increase H, thus moving 256 bytes ... /> ; 0FD00 - 0FDFCH Reserverd for IM2 Interrupts
ORG 0FDFDH ... -
Smooth Color Masked Sprites using fast page flip on 48kHere is a quick demo of using char based sprites using the Page flip method: a) Background is copied to buffer b) Sprites drawn on buffer c) Buffer …
... =FE
IM 2 ; SELECT IM2
EI
... 54H
INC H ; INCREASE H, THUS MOVING 256 BYTES FORWARD ... ATTRIBUTE ADDRESS
; LD A,H
; RRA
; RRA ... -
Smooth Color Masked Sprites using fast page flip on 48kHere is a quick demo of using char based sprites using the Page flip method: a) Background is copied to buffer b) Sprites drawn on buffer c) Buffer …
... =FE
IM 2 ; SELECT IM2
EI
... br /> PUSH AF
INC H
EXX
EX ... 54H
INC H ; INCREASE H, THUS MOVING 256 BYTES FORWARD ... -
Smooth Color Masked Sprites using fast page flip on 48kHere is a quick demo of using char based sprites using the Page flip method: a) Background is copied to buffer b) Sprites drawn on buffer c) Buffer …
... =FE
IM 2 ; SELECT IM2
EI
... br /> PUSH AF
INC H
EXX
EX ... 54H
INC H ; INCREASE H, THUS MOVING 256 BYTES FORWARD ... -
FrameSyncIt was many many years ago since i programmed assembly on the spectrum but I just picked it up again for fun. Now this is one thing I can't remember…
... is the address of your IM2 vector table, ADDR is the ... ,N*256
ld a,h
ld i,a
inc h
ld (hl),h
ld ... l,h
ld (hl),0C3h ... -
Timex 80 column display driverI subsequently wrote an 80 column font driver for 512x192 mode.
... the other hand, "ld ixh,h" is a fishy instruction that ... fixed-time subroutines into the IM2 interrupt. Stuff like text scrolling ... -
ANN: SP1 for Z88DK (aka splib3, Sprite Pack v3.0)Well it's finally arrived, after a month of "a few days from now" release deadlines. SP1 is the lastest version of splib, a flicker-free software sp…
... the importance of using the IM2 mode to measure real time ... prototype as listed in sp1.h:
[code]
extern ... '}, {0x47,'F'}, {0x07,'G'}, {0x07,'H'}, {0x47,'I'}, {0x45,'J'}, {0x46 ... blade frame 1
{0x07,'h'}, {0x47,'i'}, {0x07,'j'},
ANN: SP1 for Z88DK (aka splib3, Sprite Pack v3.0)Well it's finally arrived, after a month of "a few days from now" release deadlines. SP1 is the lastest version of splib, a flicker-free software sp…
... is to create your own IM2 interrupt service routine.
h'-'m' for frame 1.
z88dkHello. I'm an spanish user of spectrum (and naturaly of this page). I have a question. I want to start to program games with z88dk, but I need a goo…
... /z88dk/z88dk/include/input.h?revision=1.6& ... view=markup"]input.h[/URL]" (you will need ... executing in_GetKey() in the IM2 routine and writing the result ... /z88dk/z88dk/include/stdlib.h?revision=1.18& ... view=markup"]stdlib.h[/URL]. inp() is only ...ANN: SP1 for Z88DK (aka splib3, Sprite Pack v3.0)Well it's finally arrived, after a month of "a few days from now" release deadlines. SP1 is the lastest version of splib, a flicker-free software sp…
... /doku.php/library:stdlib"]stdlib.h[/URL] which means this version ... /wiki/doku.php/library:interrupts"]im2 library[/URL] that makes this ...Project: M.u.l.e.Wokani came up with a great idea about trying an open-development approach for spectrum games, and I thought why not try with a game I have under dev…
... br />
[b]interrupt.h, interrupt.c[/b]
z88dk has an im2 interrupt library that allows us ... be registered with the im2 library for execution during ... -standard additions to string.h and are described in ...
Next up.. events.h/events.cNew game: Nanako Descends to HellJust a bit over two weeks after their first game, The Mojon Twins strikes again with a new game for Spectrum 128k and Amstrad CPC: [url]http://www.m…
... having a copy of the IM2 table AND a three- ... memory banks. The new IM2 lib in z88dk 1.8 ... more details about setting up IM2 mode than the splib2 ... and how to create an IM2 table using memset().
... the M_OUTP() macro in stdlib.h. The latter inlines a ...New game: Nanako Descends to HellJust a bit over two weeks after their first game, The Mojon Twins strikes again with a new game for Spectrum 128k and Amstrad CPC: [url]http://www.m…
... more details about setting up IM2 mode than the splib2 implementation ... and how to create an IM2 table using memset().
h. The latter inlines a z80 ... doing this just after the IM2 initialization code:
[code ...Rainbow Generator for 48K Spectrum using PUSHThis is what I came up with from [B]gasman[/B]'s suggestions. It's stable in ZXSpin and ZX32 simulating a 48K Speccy. Anyone like to try it on the …
... , (chars) ; font address
ld h, 0 ; set high byte to ... ; to a
ld h, 0 ; clear h
ld l, a ... )
jp 56
; im2 jump to routine
org ...
defw 0
; im2 entry point
org 0xffff ...Arkos TrackerHi all, I'm proud to present you my Windows-based Tracker : Arkos Tracker, for you to compose for Spectrum, CPC and MSX. It requires .NET 3.5 at lea…
... ;8000 ; HL point to the IM2 Lookup table
ld a ... ,h
ld i,a ; Set ...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 …
... /> ld (hl),b
inc h
pop bc
ld ... /> ld (hl),b
inc h
pop bc
ld ... /> ld (hl),b
inc h
pop bc
ld ... /> ld (hl),b
inc h
pop bc
ld ... BASIC to sleep and used IM2. The data for the graphics ...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 188 ; cp a,h
db 32,0E2h ; jr ... /> mov byte [intmode+1],94 ; IM2
cmp byte [ebp+SNA_int ...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…
... />
intmode db 0EDh,94 ; im2
reg_ix db 0DDh ...
db 188 ; cp a,h
db 32,0E2h ; jr ...Sprites masterclassHi All, You guys are probably tired of explaining sprites but I'd like to clarify a few things if possible. I've sorted the vertical aspect of scro…
... running it under an IM2 interrupt routine, and provided ... /> ret z
inc h
and 7
...
exx
inc h
and 7
... and 7
add h
ld h,a
ld ... ;
;
build_tables ld h,shiftbyte/256
ld l ...SE Basic Type-ins^Pete suggested creating a sticky thread for SE Basic discussion. I thought a Type-ins thread might also be useful. Up to the mods if they want to ma…
... it with COPY 63550. IM2 mode is then invoked and ... /> call cls
im2:
ld a,$ab
ld b,h
ld c,l< ... /> pop hl
inc h
inc d
... />
pr_80:
ld h,$00
ld l,a ... ,bc
ld b,h
ld c,l< ...128K+ Keypad Swapsies.I've been offered a swap, a Spanish 128k keypad, for one of my UK microdrives. Is this a good swap?
... ), hook it up to an IM2 routine:
[code] push ... (FRAMES),hl
ld a,h
or l
jr ...
