-
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…
... /> ld a,16 ; prepare delay loop (7T)
dec a ... (12T/7T)
bit 0,a ; look at BREAK/SPACE ... A=0xFF on high edge, 0 on low edge (4T)
0 and 1 pulse and thus ... -
Can a guy that traveled on the short bus learn machine code...Hmmm So after some soul searching I figured it was time to finaly nail spectrum machine code. Its so frustrating to sit infront of a basic listing w…
... 255+1 will give us 0 in the register...
09 = ADD HL,BC
19 = ADD HL,DE
29 ... /> 210300 ; LD HL,0300
19 ; ADD HL,DE
44 ... -
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…
... activate 18
open 19 unlock 19
close 20 lock ...
IF ((verb 19) and (no1 > 0) and (no1 < ... marker 3
IF ((verb 19)and(noun 101)and(res ... end
IF ((verb 19)and(noun 101)and(res ... end
IF ((verb 19)and(noun 101)) mess 135 ... -
Z80 Assembler for Win7 PC (64-bit)Does anybody know where I can get a decent Z80 assembler that will work on my 64-bit Win7 PC? I tried the first one in the WoS utilities and it would…
... "filename.tap", ., _END-.
dw 19 ; TAP block size - header tape ... block (19 bytes)
db 0 ; TAP block type - header ... -
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…
... contended. Expect an extra delay of 0-7 T-states for each ... all tape loaders), the contention delay is unpredictable. You won't ... -
Z80 Assembler for Win7 PC (64-bit)Does anybody know where I can get a decent Z80 assembler that will work on my 64-bit Win7 PC? I tried the first one in the WoS utilities and it would…
... "filename.tap", ., _END-.
dw 19 ; TAP block size - header tape ... block (19 bytes)
db 0 ; TAP block type - header ... -
128 BASIC-compatible way of loading BASIC as code?On a 48K Speccy (or from 48 BASIC or USR 0 mode on a 128K machine), one can do a silly trick like this: [code];; load a 4000 byte BASIC program ld i…
... restored variables
9007 PAUSE 0: CLEAR FN p(23670):
ld a,(19)
inc a ;A =168 ... if +2A/+3 else 0
ld d,a
DivIDE not working not starting on a 128k +2AMy newly bought DivIDE (57c version) BenVersteegs Black Edition (with 4 GB CF-Card) with installed ESXDOS 0.8.5 firmware don?t boot up on my +2A Spec…
... SyncMaster 931MP Monitor LCD-TFT 19.0''
(Monitor an TV) and ...I have done a Spectrum Screen Design Template As PDFI use this for my games, to work out attribute and screen addresses. It is A4, to be printed landscape [url="http://www.peargames.co.uk/downloads/s…
... 6 7
0 16384 16640 16896 17152 17408 ... 17664 17920 18176 22528 0
1 16416 16672 ... 22336 23104 18
19 20576 20832 21088 21344 21600 ... 4400 $4500 $4600 $4700 $5800 0
1 $4020 $4120 $ ... X-ordinate in characters (0-31) to each address ...I have done a Spectrum Screen Design Template As PDFI use this for my games, to work out attribute and screen addresses. It is A4, to be printed landscape [url="http://www.peargames.co.uk/downloads/s…
... 7 Address Row
0 0 16384 16640 16896 17152 17408 ... 22336 23104 18
19 152 20576 20832 21088 ... 21600 21856 22112 22368 23136 19
20 160 ... $5740 $5A40 18
19 152 $5060 $5160 $5260 $ ... $5560 $5660 $5760 $5A60 19
20 160 $5080 $ ...What would be the simplest tape loading routine?I'm searching for some small assembly snippet I can use to load a (headerless or not) block from tape into RAM I can embed in my C games to load furt…
... the carry flag for a '0' and
setting it ... before
05E9 LD-DELAY DEC A entering the sampling ... .
JR NZ,05E9,LD-DELAY
AND A
...How much does Bifrost improve graphics (test 192x192 graphics)Inspired by the BIFROST library I made several experiments with 8x1 graphics at 192x192 resolution. The results are now overwhelming but under certai…
... /> ; 16000T
PUSH DE ; columns 0 and 1
; 16016T
PUSH DE ; columns 18 and 19
; 16092T
PUSH DE ...LZ4 decoderI encountered the [URL="http://code.google.com/p/lz4/"]LZ4 compressor[/URL] a few weeks ago. Reading the [URL="http://fastcompression.blogspot.co.uk…
...
unlz4:
ld b,0 ; rest of code can assume ... B=0
.mainloop:
... byte counter
xor 19 ; see if it's ... either 15 (for literals) or 19 (for already-
;; decompressed ...SoftPLAY: Use the PLAY command from 48 BASICNow you don't need 128 BASIC to use the [B]PLAY[/B] command. Just use [B]PRINT #8;[/B] instead. [url]https://dl.dropboxusercontent.com/u/15659782/So…
... use with the DivIDE (ESXDOS 0.8.5). Anyone interested please ... .php?p=729224&postcount=19"]relative thread[/URL] ;) (you have ...SoftPLAY: Use the PLAY command from 48 BASICNow you don't need 128 BASIC to use the [B]PLAY[/B] command. Just use [B]PRINT #8;[/B] instead. [url]https://dl.dropboxusercontent.com/u/15659782/So…
... use with the DivIDE (ESXDOS 0.8.5). Anyone interested please ... .php?p=729224&postcount=19"]relative thread[/URL] ;) (you have ...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 nz ; return if delay not finished
ld a ... 0x0360
k_digit:
cp '0' ; digit, return, space, shift, ... shift?
ld hl, kt_ctrl - '0' ; set control table
jr ... br /> ld hl, kt_numsym - '0' ; else use symbol table
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…
... get remainder
ld b, 0 ; offset
ld c, a ... br /> nop ; 12 t-state delay
nop ; 8 t-state ... INT p)
fst 0 ; i to mem-0
fsub ; d ... , 0x98, 0x1f, 0xf5 ; mantissa (0.0577622606)
fmul ; d, pk ...Break into programIs there any way of stopping people using the break option in my software productions so they can list the code.
... z,MCCONT
ld a,(19)
inc a ;A =168 ... if +2A/+3 else 0
ld d,a
[code]
9000 LET levels=0:
FOR a=PEEK 23613 ...SCREEN$ bug fixI've been using the SCREEN$() function recently for reading data off the screen rather than taking up space with an array and I got fed up with the s…
... adjustment = (256-offset)/256 = 0 or 1
; 5: ... $2ab2 STK_STO_$
bit 0,c ;DE=address, BC=length ... ,de
ld a,(ix-19)
or a
... of set
ld d,0
sla a
...pervy-est area of ukprobably aren't too many places you can see the Devil's Dyke Fulking a Bushy Bottom :lol: [url]http://streetmap.co.uk/place/Fulking_Hill_in_West_Su…
... .755016,-2.225649&spn=0.00299,0.004823&sll=53 ... .064941&sspn=11.447161,19.753418&t=h& ...Troublesome routine, help needed!Having problems with this routine, it basically fires a rocket up the screen, but refuses to detect collisions. I'm using attribute blocks for detect…
... vals
defb 0
bv1 defb 0
defb 0
attr ... 15, 15
defb 12, 0, 128, 192
defb 192 ...
defb 192, 19, 19, 12
defb 12, 19, 19, 12
defb ... , 140, 4, 4
defb 0, 0 ; UDG data[/CODE][/QUOTE]
Finders Keepers+I know a few of you are interested in this project so I thought it was about time I started a proper thread for it rather than just slipping bits int…
... "filename.tap", ., _END-.
dw 19 ; TAP block size - header tape ... block (19 bytes)
db 0 ; TAP block type - header ...Mountains of Ket - Written in Basic?Was Mountains of Ket written in Basic? And if so is there any way to break into it? The parser's pretty impressive, I want to see how it was done.
... : JP $38" (241,195,56,0) which jumps from the IM2 ... " (241,237,118,195,56,0) to disable the IM2 routine ... /> 62059,251 : 62063,0 : 62082,3 : 62083,19
(which enables interrupts ...BLOG- ZXSporgBasic RPG development thread- Inspired by the Spectrum 30 show, and after a six-month wait while I was busy playing loads of gigs, I have decided to do a spot of Spectrum coding…
First development in 8 months on this project - changed the mechanics of setting the colour of the walls in line 9720. Instead of one general ink 1 statement, it specifies the ink colour blue for each block printed. This is so I can print black (for a door ...BLOG- ZXSporgBasic RPG development thread- Inspired by the Spectrum 30 show, and after a six-month wait while I was busy playing loads of gigs, I have decided to do a spot of Spectrum coding…
Actually decided the doors need to be white as the that's the only colour the PC can walk over. Line 9720 is now a bit of a monster as the ink colour needs to be evaluated with [I]INK 1+6*(VAL t$(5)=1)*((j=7)+(j=8))[/I] or similar before each square of ...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 …
... HL
LD (HL),19 ;MAIN4 =4867 on stack < ...
JP 7088 ;the 0-OK msge.
last1 ...
