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Example Programs Shipped with EmulatorsHi guys, I'm doing a bit of shameless promotion of Arcade Game Designer as it has been pointed out that I've not publicised the tool terribly well t…
... for now, although version 4.0 is just around the corner. If you ... 'd like slightly customised versions (eg "SPUD" or "ZERO ... " instead of "V4.0" in the top ... -
Z80 internal compressionThis isn't exactly a ZX Spectrum problem, but since WOS probably has some of the best Z80 coders in the world, I thought I might ask anyway. For my …
... ; I do not remember now why I had exactly this ... ),HL ; if all these 5 bits were 0 and if the offset ... byte was 0 then we ... br /> EX (SP),HL
OR A
JR NZ,UM10 ... gt; the end.
Now, I never quite finished my ... -
Interface 1 bisOk, well the postmans just been and brought with him my new arrival, the Interface 1 bis. So as promised I thought I'd share some initial usage exper…
... properly documented. I added now the info to the ... 2.2 Set sensitivity: CAT 0;"[m]s"+CHR$
... 2.2 Set rate: CAT 0;"[m]r"+CHR$
... sqare brackets may be omitted if
they are ... not at the beginning or the end of the ... -
generating a pre-defined list in an un-defined sequenceI've decided to become a drunkard, to which end I've been drinking a whole bottle of beer in one day (whereas normally I'd make it last 2 or 3 days).…
... ] from 0 to 65535, without repetition. Now calculate [B]C = A xor B ... [B]Y=LSB(C)[/B]. If this position is outside the ... that calculating [B]C = A xor B[/B] will also generate ... a sequence of numbers from 0 to 65535 without repetition. Since ... -
FZX: a new standard format and driver for proportional fonts[B]FZX[/B] is a very compact and efficient (although extremely flexible and powerful) standard format to create new fonts for the ZX-Spectrum. It sup…
... wonderful editor.
Now, I'm having some trouble ... replaced the terminator with $ff. Now printing always works, but it ... 0,0 seems to be problematic. FZX will start printing at 0,7 or ... Side-effects could occur especially if ROM routines were used in ... -
Childhood moments with my SpeccyHey everyone. The other day I randomly came across a tumblr page called "Me and My ZX Spectrum" ([url]http://meandmyzxspectrum.tumblr.com[/url]) …
... I shall remember it if/when I'm 80 as part of ... pondering getting a DivIDE Plus or DivIDE 2K11 for the past ... week or so but can't ... which has every single NOW! album from NOW 1 in 1983 onwards ... 2 using keys a good or bad effort?), Hyper Sports - ... -
FZX: a new standard format and driver for proportional fonts[B]FZX[/B] is a very compact and efficient (although extremely flexible and powerful) standard format to create new fonts for the ZX-Spectrum. It sup…
... 1 (means 0-->1 or 1-->2 or 2--> ... jpg[/IMG]
If the character has no space ... heights >50 or 60 pixels) if we use only that ... powerful undo/redo feature with now 5000 undo-/redo-steps ... things with the current character or with the whole font, ... -
Confounded DEF FNCan anyone see why this is going wrong? I've been tinkering with it since tea time and got nowhere. [code] 2 DEF FN t$(n,t,d) =STR$ INT (n/t)…
... to divide by 50 or 60 to get the ... segment
exx
xor a
ld ix,ANSWER ... ,NoReset ;jump if it "doesn't go", 0 to Carry
GetDigit:
xor a
SubDigit:
add ... -
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…
... out of key somehow, as if the background "whistle" of zeros ... the later ones with the xor or encryption or whatever was going on ... =0&memory=0&language=0&country=0&licence=0&feature=0 ... -
FZX: a new standard format and driver for proportional fonts[B]FZX[/B] is a very compact and efficient (although extremely flexible and powerful) standard format to create new fonts for the ZX-Spectrum. It sup…
... , not sure if it's related to FZX directly or to the ... is back where it is now.
Interesting...[/QUOTE]
now, how that could happen. But ... important to know that the 0.94 version had that problem ... -
Hardware description - MULTIFACE 128I make schematic of MULTIFACE 128 (v36) from PCB layers downloaded from WOS. But all PCB layers on WOS contain some bugs, absent signals, etc.. Now …
... pin 3 is in log.0 = set output pin 9 of ... set NMI pin to log.0 (via IC8B). Address decoder detect ... address #66 or #67 (NMI routine in ZX rom). If CPU at ... (on pin 5 is log.0) = active /OE on IC8A(LS125 ... to log.1.
Now is MULTIFACE memory connect.
Compiler conventions for passing args/return valuesI've been mulling over this for a while, but I can't spot it covered anywhere. There are various methods for passing args and return values between …
... - you are returning "true" or "false". If you compute the bool return ... , stdio_error_einval_zc ; no
or a ; 0 base is no good too ... /> ld d,b
xor a ; end of digits marked ...GAC Tutorial Started!Hi all. I have a Youtube channel where I play old games and such. I also do a few programming tutorials. I have recently added a Graphic Adventure Cr…
... are carrying "
240 "What now?..."
241 "You can't ...
IF ((VERB 12) and (no1 > 0) and (no1 < ... (no1 > 0) ) mess 138 wait end
IF (VERB 17 ... do things here
IF ((VERB 18)or(verb 14)) mess 139 ...US Timex-Sinclair 2068 in EuropeWhilst in the States, I convinced a colleague to bid on a Timex-Sinclair 2068. We won the auction with a price much better than in Europe. Next time …
... crash with the Spectrum ROM now present, hopefully causing the program ... counter to pass through address 0, and the machine boots up ... Timex cartridges. If you have a copy of pinball or whatever on ... LROS was meant to augment or replace the operating system. You ...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…
... ret nc ; return if no key or shift
ld ... ret nz ; return if not
xor %00100000 ; toggle bit ...
k_digit:
cp '0' ; digit, return, space, shift ... k_look_up ; jump if shift
ld hl, kt_numsym - '0' ; else ...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…
... /> jr z, sound_1 ; jump if so
call fp_to_a ; ... into
rrca ; place
or %00001000 ; MIC off
< ... 10 t-state jump
xor %00010000 ; toggle bit 4< ... 0x98, 0x1f, 0xf5 ; mantissa (0.0577622606)
fmul ; d, ...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…
... call check_end ; next statement if checking syntax
call ... br /> ld (ix + 0), 0 ; set type 0
scf ; set ... 0x0767
ld_look_h:
xor a ; signal header
... SCREEN$ or CODE?
jr nz, report_r ; error if so
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…
... c ; twos complement
xor c ; if negative
ld (hl), ... nine digits
xor a ; LD A, 0
rld ; ... '
ld l, 0 ; LD L', 0
exx ; main ... stack count and result (C or C')
exx ; switch ...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…
... alternate register set
xor a ; LD A, 0
... /> ; THE 'PREPARE TO MULTIPLY OR DIVIDE' SUBROUTINE
org 0x30c0 ... ; first bytes of
or (hl) ; both numbers zero?< ... br /> ret c ; return if zero
exx ; ...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…
... br /> jr nz, sv_close ; jump if so
cp ')' ; closing ... br /> jr z, sl_second ; jump if so
cp ')' ; closing ... ?
ret z ; return if so
call hl_equ_hl_x_de ; ...
xor (hl) ; A is 0 for short or 192 for ...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…
... nz, sec_plus ; jump if not null
or c ; both null?
xor (iy + _flags) ; test bit 6 ... x' - 0.5, 0.5
; y2, 2 * x' - 0.5, 0.5
0)
fst 0 ; mem-0 = test result
...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…
... 48K machine or greater
xor a ; A = 0
... z, main_9 ; immediate jump if successful
cp STOP_statement + ... set CONTINUE to next statement if so
cp BREAK_into_program ... /> ret z ; return if so
cp STOP_statement ...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…
... jr nz, auto_l_5 ; jump if so
xor e ; current line printed ... ld a, c ; test
or b ; for zero
jr ... out_line:
ld e, 0 ; LD DE, 0
rl e ; E ... /> ld a, e ; space or 255
and a ; test ...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…
... nz ; return if no match
ld c, 0 ; BC = 0
jr z, renum_line_4 ; jump if so
or %00100000 ; make lower case ... 0x3bbb
insert_dgt:
xor a ; LD A, 0
org ...Collision Detection in SP1Hi, Does anyone have a well-documented example of using collision detection in spritelib. I've search WoS and Z88DK forums but no joy. Something wi…
... I had with the stack or the heap colliding with the ... /> and it takes another collision or two to crash
now
for(i=0; i 21) // if sprite went ...What's on your saucer?Thanks go out to frobush and zx1 for inspiring* this WoSser to create a yet another excellent WoS thread. Lunch 10 minutes ago. [IMG]http://i300.ph…
... /> Well munching this lot right now, it's nice! :D[/QUOTE ... would be excellent
If:-
Sauce = hp
0/5 ?
Or maybe 1/5 at ...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 …
... next byte
ld c,$80
.SPHuffDecode
if msb of left pointer = 0 then this is a leaf
or ... jr z, goleft ; if code bit is 0, move left along tree ... decompressor so that decompression (or compression if you are writing) happens ...Animated attribute revealA new challenge to solve next. I would like to create an animated attribute reveal in machine code by having my 768 byte attributes held in ram whic…
... & 10 (E)
xor e
and %00000001 ;mask ... always bring in a 0 as OR resets Carry
... jr nc,SKIPDE ;skip if beyond attributes area (>=$ ... ld a,b
or c
jr nz ...Animated attribute revealA new challenge to solve next. I would like to create an animated attribute reveal in machine code by having my 768 byte attributes held in ram whic…
... amp; 10 (E)
xor e
rra
... amp; 12 (E)
xor e
rra ;align ... amp; 13 (E)
xor e
and %00000001 ; ... always bring in a 0 as OR resets Carry
...Tile routinesHi all, Please does anyone have any examples of tile routines in pure asm to set up maptile screens. I would like to try and understand them and ti…
... to BASIC
cp 0 ; if it's zero, it's ... br /> call get_screen_location2 ; HL now contains screen position to print ... />
; *****************
pop hl ; now get that screen address to ... or 0x58
ld d, a
ex de, hl ; now ...
