-
Building a menu in ASMWEll as probably some figured, i am learning asm at least to make the basic menu i did in basic. It is a menu where we can select games to be loaded.…
... game. Example:
1 - Alien 8
2 - ... ",$10,7,$11,1,"01",$10,0,$11,7," Alien ... ",$10,7,$11,1,"02",$10,0,$11,7," Knight Lore ... ",$10,7,$11,1,"18",$10,0,$11,7," The ... paint the alternate lines 0,2,4 that are ... the other alternate lines, 1,3,5, then i ... -
Memory mapping: Pentagon compatibility?I'm writing something that will rely heavily on the Spectrum's ability to switch screen buffers in hardware (port 0x7FFD). The original Spectrum 128K…
... Bit 0 - if 0 from 0000h address ROM is placed. If 1, ... .
Bit 1 - Management of the protected mode ... . If 0, protected, the mode is ... disconnected. If 1 the protected mode is included ...
A=1 for RAM 0,1,2,3
A ... -
Help me understand ZX RGB signal (long)This will be a long post so please bear with me and most importantly help me. I have a 128K+ and +2A that I'm trying to get working with my 15kHz RG…
... /> Signal Requirements:
RGB: 0.7vpp 75 ohm
composite ... Signal Requirements:
RGB: 0.7Vpp 75 ohm
... /> RGB: 0-5V TTL
Composite: 1.2Vpp 75ohm
+2A
RGB: 1.67Vpp 75 ohm
Composite ... the voltage from 1.67V to 0.7V. It ... -
Manipulating attributes...Hi Folks, I have written a routine that allows a blue bar to be scrolled up and down a list to select an item. Each item in the list occupies two l…
... AT 0,0;a$:
POKE 23693,BluWhi0:
PRINT AT 1,0;b ... +1,0):
PAUSE 1:
PRINT AT y,0; PAPER 1; INK 7;l$(1 ... )
210 PAUSE 0:
PRINT AT y,0;l$(1, TO 32);:
POKE ... -
A little program to set the time...Hi Folks, OK, I have amended the program so you now have four routines/functions you can use in your own programs: TIME: GET - Reads the current va…
... REM 26-Nov-2010 : v1.0
120 REM --------------------------
125 ... BORDER 0:
PAPER 0:
INK 7:
9020 REM --------------------------
9025 PAUSE 1:
LET hh=(65536*PEEK ... -
A fast DRAW routineI was investigating how to speed up the line drawing for the [URL="http://www.worldofspectrum.org/forums/showthread.php?t=20225"]BASIC compiler[/URL]…
... /> __DRAW1:
ld (DX1 + 1), hl ; Updates DX1 call address ... Replace with CPL if INVERSE 1
__PLOTOVER:
... (hl) if OVER 1 AND INVERSE 0
; Replace ... with AND (hl) if INVERSE 1
A clever method of using a single 8-bit register to be used for two things at a timeI don't know if this is the way the SAVE routine in the Spectrum works. Anyway, this is what I've learned today. I've been commented the disassembly…
... required pulses for a '1' bit or '0' bit within the byte ... the carry to the bit 0 of L, and the bit ... is executed, a '1' is loaded into bit 0 of L.
0.
So, everytime we executed ...Request for help (Z80 gigascreen loader)Although I'd attempted to stick to keeping things simple in Image to ZX Spec now I've implemented Gigascreen (8x8 only) I've found the BASIC Gigascre…
...
[CODE]
1 BRIGHT 1: PAPER 0: BORDER 0: INK 7
10 ... "
70 PAPER 0: INK 7: BRIGHT 1
80 PRINT ... 0: INK 7: BRIGHT 1
150 PRINT AT Y,1;" ... 250 PRINT AT Y,1;"(type USR 0 to switch to 48K ... 274 PRINT AT Y,1;"setting of 0 waits for a key ...Micro PowerJust google mapped Micro Power to see the old [URL="http://maps.google.co.uk/maps?q=ls71ad&ie=UTF8&hq=&hnear=Leeds+LS7+1AD,+United+Kingdom&gl=uk&ll=5…
... ;ll=53.806708,-1.535532&spn=0.006576,0.01929&t ... =c&cbll=53.807168,-1.535035&panoid=1FQeP28sxGz6Dp5P_PV2Vw& ... ;cbp=12,255.47,,0,-18.23"]building[/URL], it ...2nd hard drive puzzlerHello all OK,this is a one for the PC builders.I am thinking about putting a 2nd hard drive into my PC.I know that from when i go into my Motherboa…
... bottom)?.See above video at 0:42 for reference.
And ...Lerm Tape Utility CHi folks, These Lerm tapes are doing my head in. Through the years I've aquired lots and lots of samples of these, but never been able to make a cl…
... .
There's a 1 or 0 ms pause between the blocks ... in this case have a 1 or 0ms pause and use ...
Sync 0 = 667 : Sync 1 = 735
Bit 0 = 856 : Bit 1 = 1712 ... values should follow the rule 1 = 0 * 2 or not ?
Sometimes ...Definitive list of games incompatible with +2A/+3 and of compatible versions (if any)I am trying to compile the definitive list of games which are incompatible with the +2A and the +3 and of their compatible versions, if they are pres…
... using Fuse for Windows 1.0.0.1, ZX Spin 0.7 and two actual ... , unmodified +2A machines.
[b]1 ...Back to BASIC[U][B]Archaeology guide to programs compiled used MCODERII.d[/B][/U] After various people have been talking about "Frank'n'stein" I decided to finis…
... follows:
[LIST]
[*]base+0 = DWORD containing value of variable ... follows:
[LIST]
[*]base+0 = pointer to string
[*]base ... /> [CODE]start NOP
+1 LD HL,0
+4 LD (59346 ...Google Earth.Google Earth/ maps satellite view is fascinating I could spend hours on it. There are just so many weird and unexplained mysteries within in it. L…
... ;ll=51.894606,-1.233269&spn=0.002572,0.006866&t ... ;ll=51.913673,-1.271582&spn=0.010232,0.027466&z ... ;ll=52.136109,-1.484249&spn=0.010233,0.027466&t ...Shadow ROM partial decoding not implemented in emulatorsOr at least, not implemented in Spectaculator, and it seems that not in Fuse too. [URL="http://www.speccy.org/foro/viewtopic.php?f=8&t=408&start=53"…
... shadow ROM in the Interface 1 emulation is paged, the ... SAVE *"m";1;"rom" CODE 0,16384 : LOAD *"m";1;"rom" CODE ... />
StartCopy ld hl,0
ld de,32768
1 partially decodes the shadow ROM ...Operator ANDHi I'm trying to write some very simple game in ZX Basic, but I guess I've forgot most of it because I can't understand why simple IF....THEN sequen…
... /> ...
100 IF a=0 AND SCREEN$ (1,1)=" " THEN LET Y=Y ... -1
I thought that ... surprised that LET Y=Y-1 is executed even though only ... IF SCREEN$ (1,1)=" " AND a=0 THEN LET Y=Y-1
128K Contention - How to get it right?With my recent hardware hackery, I've built a 128K (toastrack) clone. I can't quite get the contention right though. What I'm lack is a clear descri…
... apply contention if ULA14 = 1 and ULA15 = 0.
Now fusetest ... all the tests!
1. Can someone describe accurately the ...The Only Way is EssexLenny Henry, since his dalliance with a blonde in a hotel, has been regularly recommending that I stay in a Premier Inn for ?29. Well I checked out …
... ;ll=51.614662,0.299461&spn=0.000893,0.002642&sll ... =54.729737,-1.883353&sspn=0.006579,0 ... =c&cbll=51.614822,0.299498&panoid=oC3paIvIA0D1ZgvOpGa7JQ& ... ;cbp=12,298.8,,0,-15.85[/url]z88dk hates me =(Hello there my fellow WoS'ers Under the power of darkness I was about to settle in and play with some SP1 sprite handling (as printf is simply NOT f…
... />
clear_screen(7,0);
print_at( 1,1,6,0,"Initializing Menu System ... items */
{
store_menu("Option 1 \0", 10, 7, cyan, black, white ...Dizzy, Prince Of The YolkFolk: Alternate loading screen?Hi, Please have a careful look at the new Dizzy remake teaser (seconds 0:42-0:52) [youtube]LGW53914gDk[/youtube] That certainly looks like a [b]*r…
... new Dizzy remake teaser (seconds 0:42-0:52)
[youtube]LGW53914gDk ...Why are the same size memory cards different sizes?I've heard before that two memory cards or USB sticks can have the same official capacity, but be different capacities in reality, and I'm not talkin…
... (2).txt
1 File(s) 0 bytes
0 Dir(s) 2 ... ).txt
1 File(s) 0 bytes
0 Dir(s) 1,962,856 ...BASIC: Find the nearestHello guys) A few days ago I found oldie ?Jeux et casse-tete a Programmer? by Jacques Arsac (Paris?85) and suggested my nephew to try a few in Basic…
... placed ?flowers? with value of 1 to 9;
- there Y ... works ok, except
[B]1) finding the nearest
2 ... [/B]
The problem #1 is solved via
a ... ]distance=100
for i=1 to N
let a ...A z88dk + sp1 demo (with source)Since nowadays people are still wondering about how difficult it is to make something in z88dk, I thought I just put a very simple demo to show how e…
... ,2,0}, {0,96,120,2,0},
{0,96,56,1,1}, {0,160,88,2,0}, {0 ... ,160,120,2,0}, {0 ... ,160,56,2,0}, {0,0,0,2,0 ...The curious case of the vanishing zerosRight, I'm back for more help guys This time I think I've figured out the code ok....but still it fails - well it works but only once... Basically …
... ]0[/B][I]0[/I]011000
180 POKE USR "p"+1,BIN ... [B]0 ... [/B][I]0[/I]011000
190 POKE USR "p"+2,BIN [B]1 ... USR "p"+7,BIN [B]0[/B][I]1[/I]000010DATA vs PRINT and OVERjust messing about and came across this alternative way of drawing a map....now before I start mucking about with my actual program.....is there any …
... ?
10 INK 0: PAPER 4: BORDER 4: CLS ... 1000
30 FOR m=1 TO 3: READ a$: PRINT ... AT m,1;a$: NEXT m
1000 ... can) despite trying a OVER 1 and OVER 0 type instructionHardware for SaleI've had a bit of thinning out session this afternoon. Thus some hardware and accessories for sale. [url]http://www.ebay.co.uk/sch/fredmysterio/m.h…
... =zx&_sacat=0&_sop=1&_dmd=1&_odkw=& ... ;_osacat=0&_trksid=p3911 ...Shaded Desktop...Hi Folks, As part of some BASin testing I thought I would create a little program that creates a shaded desktop. In this case it goes from solid bl…
... FAST
110 BORDER 0: PAPER 0: INK 1: CLS
120 REM ... REM PAPER(17) 0; INK(16) 1; AT(22) 0,0
150 LET ... +CHR$ 0+CHR$ 16+CHR$ 1+CHR$ 22+CHR$ 0+CHR$ 0
160 ...
290 PLOT INVERSE 1;255,0: DRAW INVERSE 1;0,175
300 ...Dimming the screen...Hi Folks, I was hoping someone on here could help me with a wee machine code routine. I have written the following example in BASIC: [CODE]100 REM…
...
120 BRIGHT 1: FOR y=0 TO 21: FOR x ... x: NEXT y: PRINT #0;AT 0,0; BRIGHT 1; PAPER 7,,,,
... 130 PAUSE 0
140 FOR ... />
When run lines 0-21 are filled with random ... then runs from line 0-21 changing all bright ...number padding functionI wrote a number padding function in BASIC a while ago, but when I came to want it again I couldn't find it, so I've done this enhanced [url=http://w…
... p$(1,0,0) := "1"
FN p$(1,0,1) := "1.0"
FN p$(1,-5,3) := " 1.000 ... "
FN p$(1,-5,0) := " 1 ...
