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Coding for 128kHi all, I wonder if anyone can suggest any useful reading/threads/examples on the fundamentals of 128k coding. Chapter 24 of the +2 manual has prov…
... first screen is always at 16384, no matter what. Even if ... to page it in at 49152. Although you can also page ... in the first screen at 49152, in which case it's ... -
UDG in AssemblyHello there my fellow WoS'ers I am currently having a play with z88dk and PASMO and would like to have some fun with some UDG's so is there a tutor…
... means eveyone's going to jump in with optimisations. Though to ... row address table
defw 16384, 16416, 16448, 16480, 16512, 16544 ... -
Converting games to disk: difficult loadersThis thread has an spanish version in foro speccy, but I haven't gathered enough information to overcome my problems. I've been converting some game…
... to know where is the jump to the main program (i ... stack in its place and jump to the main code.
16384 bytes to them), but I don't know where to jump ... instructions of Fist + (after the jump) are a di and a ... location of SP before the jump is not critical so the ... -
Red DwarfA Red Dwarf video game - good or bad idea? (given its recent resurgence in popularity in the UK) My ideas: [b]Plots[/b] - An interquel which bridg…
Disabling the +3 disk buffer; yes, but how?I would like to disable the +3 disk buffer in order to retrieve those 4K from the machine's RAMdisk. By reading the computer manual and some posts on…
... M/C routine somewhere below 49152, say at 49000, so the ... via its entry in the jump block
; on exit from ...Sam CoupeI am very interested in the Sam Coupe but I wanted to ask a lot of questions about it. Do anyone here use one a lot and are there any Sam Coupe foru…
...
16384-32767 = ram1
32768-49151 = ram0
49152-65535 = ram1 ...A quick newbish questionI'm reading through 'mastering machine code on your spectrum',as kindly posted by Mr bert on this forum. Correct me if I'm wrong from what i read,bu…
... Spectrum ROM .
Locations 16384 -22527 is the screen.
49152 pixels (192 lines of 256 ... and off).
Incidentally 49152 / 8 = 6144 so you've ... A, 255
LD HL, 16384
LD (HL),A ; Where ...More tea, vicar on disk?Hello, can somebody help me putting the 128k version of this game on disk? The 128k version is free available from Jonathans Webseite. However, the g…
... /> 4.- Headerless block, code 49152, length 16384, flag 255, loaded at RAM1 ...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).…
...
ex de,hl ;DE=16384+INT(yx/8)=display file ...
add hl,bc ;HL=49152+INT(yx/8)=2nd screen ...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…
... /> jr z,.verify_checksum; jump forward if this is ... ; if not pressed, jump into loop
xor ... br /> jr z,.low_edge ; jump forward if so
... screen
ld ix,16384
ld de,6912 ...Hardware description - MB-02+ interfaceOn this thread will soon released info about MB-02+ idisk interface ( memory paging mechanism, list of ports, addressing, MB IDE, schematics, etc... …
... with write protect) and CPU jump to address #66.
- data ... DE,0
LD BC,16384
LDIR ; copy image of ...Copying data between memory banks in USR0 modeI am experimenting with Funky Fungus to load the majority of its data (levels, screens, music etc.) into memory banks 1, 3, 4, 6 and (partly) 7 by sw…
... top 16K with LOAD "" CODE 49152.
To copy it ... ]LD HL, 49152 ; the source address
LD DE, 16384 ; the destination ...Copying data between memory banks in USR0 modeI am experimenting with Funky Fungus to load the majority of its data (levels, screens, music etc.) into memory banks 1, 3, 4, 6 and (partly) 7 by sw…
... br /> LD HL,49152 ;start
LD DE,16384 ;destination
... HL,16384 ;copies the first 6144 bytes
LD DE,49152 ... data
LD DE,16384 ;and copies it to ... the last 4096 bytes remaining (16384 - 6144*2 = 4096).
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 hl, 49152 ; point to alternate screen ... LOAD
jp ld_block ; immediate jump
; -----------------------------------------------------------------------------
... jr nz, ld_cont_1 ; jump unless loading undeclared array< ...Copy 4Kb in Assembly?Here's an interesting problem: what's the best way to copy a block of 4Kb in assembly? The most obvious solution is to use [B]LDIR[/B]: [CODE] l…
...
DI
LD HL,49152 ;fill source with some value ... ,49152 ;source start is 49152
LD IY,16384+14 ;target start is 16384 ...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, s_quote_s ; jump if not
call ...
ld hl, 49152 + 80 ; first character ... /> s_ink_str_en:
jp s_cont_2 ; immediate jump
; -----------------------------------------------------------------------------
...Copy 4Kb in Assembly?Here's an interesting problem: what's the best way to copy a block of 4Kb in assembly? The most obvious solution is to use [B]LDIR[/B]: [CODE] l…
... would work in case of 16384 and 49152 but it's not ...Copy 4Kb in Assembly?Here's an interesting problem: what's the best way to copy a block of 4Kb in assembly? The most obvious solution is to use [B]LDIR[/B]: [CODE] l…
... ):
[CODE]ClearScreen: ld hl, 16384+6912
ld d, INK_BLACK ... course I realise you can jump in at CLSLoop after setting ...Copy 4Kb in Assembly?Here's an interesting problem: what's the best way to copy a block of 4Kb in assembly? The most obvious solution is to use [B]LDIR[/B]: [CODE] l…
Copy 4Kb in Assembly?Here's an interesting problem: what's the best way to copy a block of 4Kb in assembly? The most obvious solution is to use [B]LDIR[/B]: [CODE] l…
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…
...
cp 0x40 ; less than 16384?
ret c ; return if ... address
jp main_exec ; immediate jump
; THE 'INITIAL CHANNEL ... ; address
jr call_sub ; immediate jump
; THE 'MAIN PRINTING ...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…
... comma?
jr z, list_2 ; jump with preceding stream
call ... nz, list_4 ; jump if not
ld bc, 16384 ; range limit ... :
ld (t_addr), bc ; 16384 to t_addr
call find_line ... overflow
ld hl, 16384 ; line range is 0 ...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…
... console_in_3:
jp key_input_1 ; immediate jump
; THE ' ...
ld de, 16384 ; max line number is ... space?
jr z, renum_line_3 ; jump if so
call numeric ... ?
jr nc, renum_line_3 ; jump if so
cp '.' ; ...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…
... any more.
LOADER_DYNAMIC_TABLE_ADDR:equ 49152
;;; loader_dynamic requires ... /> ;; load 8144 bytes at address 49152 using "resume"
ld ix ... />
;; if the load succeeded, jump to the game, otherwise
A "generic" loader for +3(e)I've made this loader for 128k games in +3DOS. [CODE]dos_open equ 262 dos_close equ 265 dos_abandon equ 268 dos_read equ 274 dos_write equ 277 dos_s…
... /> dw 16384
dw 6912
db 1
dw 49152
db 3
dw 49152
dw 14819
db ... 4
dw 49152
dw 14555
db ... 6
dw 49152
dw 9497
db ...Fists of Fury (Virgin)[URL="http://www.worldofspectrum.org/infoseekid.cgi?id=0011704"]http://www.worldofspectrum.org/infoseekid.cgi?id=0011704[/URL] I've got this title. …
ZX memory questions1. what is the highest address in a 48k spectrum that can be written to? 2. can you write to an address less than 16384 (on real hardware) 3.48k...…
... to an address less than 16384 (on real hardware)[/QUOTE]
49152 bytes? )[/QUOTE]
48 ...How did you learn to code on the Spectrum?Got to be honest, as much as I wish I did, I don't know anything about programming. I had a Spectrum (+2 and then +2B) when I was a kid, and my prog…
... these strange numbers (16384, 6144, 22528, 768, 32768, 49152, 65535) off-by ... , so C000 must therefore be 49152 (checks calculator - yep) but I ...How did you learn to code on the Spectrum?Got to be honest, as much as I wish I did, I don't know anything about programming. I had a Spectrum (+2 and then +2B) when I was a kid, and my prog…
... these strange numbers (16384, 6144, 22528, 768, 32768, 49152, 65535) off-by ... , so C000 must therefore be 49152 (checks calculator - yep) but I ...
