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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…
... that is the original printer buffer area.[/quote]If I understand ... 'm not touching the printer buffer/128K system vars at all ... as code, I first used CLEAR to set the stack to ... -
Basic sourceAre there any utilities available that will extract Basic source to a text file, or insert it from a text file into any of the common formats lie z80…
... also used as the editor buffer, so don't panic when ... after the OK prompt to clear it. Once a BASIC program ... -
SE BasicAfter 13 years of development I thought I'd run out of things to optimize, but it turns out I was wrong. However, I'm now running out of time to work…
... in hi-res mode.
[*]CLEAR performs a RESTORE.
[*] ... br /> [*]Reset ULAplus palette from buffer: RESET.
[*]Retained support ... entry.
[*]ULAplus palette buffer following the default screen area ... of a line to clear an unwanted edit line.< ... -
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…
... of RAM
jp test_16k ; clear normal RAM in case of ... bc ; stack BC
call keyboard ; read keypress
pop bc ... -
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…
...
; THE 'KEYBOARD' SUBROUTINE
org 0x02bf
ld d, 0 ; clear D register
cp 39 ... subroutine
; THE 'KEYBOARD DECODING' SUBROUTINE
org 0x0333 ... k_look_up:
ld d, 0 ; clear D
add hl, de ... -
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…
... first pass
xor a ; clear carry flag
dec b ...
in a, (ula) ; read keyboard
rra ; rotate right accumulator ... /> ld_marker:
ld l, %00000001 ; clear L except for marker bit ... -
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…
... pf_fr_dgt:
ld bc, 0x0200 ; clear C, count of 2
ccf ; clear carry for valid digit
clear
org 0x2f25 ... , (hl) ; get digit from buffer
inc hl ; next digit ... -
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…
... ; -----------------------------------------------------------------------------
; THE 'SCROLL BUFFER' SUBROUTINE
org 0x2571
ldir ; clear last row
; ... a ; prepare for subtraction (clear carry)
sbc hl, ... -
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…
... ; unstack AF
and a ; clear carry flag
org ... if valid
call in_chan_k ; keyboard?
jr nz, x80_fread_2 ; jump ... if not
halt ; read keyboard
org 0x369b
IF EXIST?In MS-DOS scripting, there is an IF EXIST command that lets you check wether a file exists in disk or not. There are any way to check it out from BA…
... /> directory entries.
Buffer format:
Entry 0 ... )
DE = Address of buffer (first entry initialised)
HL ... = Number of completed entries in buffer, 0...n.
(If ... area (unless
the CLEAR command has been used to ...z88dk and im2I set up a minimal IM2 mode so I can draw sprites for a laff [code] #include <string.h> #include <stdio.h> #include <im2.h> #include <stdlib.h> #in…
...
in_Inkey() and the other keyboard functions are unrolled somewhat and ... used to scan the keyboard is in_GetKey(), which requires ... I tried reading the keyboard with assembly but z88dk says ... maybe below RAMTOP set by CLEAR?). If you get weird crashes ...Collision detection for interlocking shapes[SIZE=3][FONT=Calibri]I?m looking for some advice as I?m not sure how to resolve the following problem. I have an in memory structure that holds info…
... to make a shadow buffer of the attributes. So ... relates to a shadow buffer location and when you ... you set the shadow buffer locations to non-zero ... br />
1. Clear the shadow buffer
2. Get a ... locations in the shadow buffer are clear draw the shape
Collision detection for interlocking shapes[SIZE=3][FONT=Calibri]I?m looking for some advice as I?m not sure how to resolve the following problem. I have an in memory structure that holds info…
... to make a shadow buffer of the attributes. So ... relates to a shadow buffer location and when you ... you set the shadow buffer locations to non-zero ... br />
1. Clear the shadow buffer
2. Get a ... locations in the shadow buffer are clear draw the shape
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 /> call set_min ; clear all work areas and calculator ...
call cls_lower ; clear lower screen
pop ... address
and a ; clear carry flag
sbc ... :
defw print_out, key_input ; keyboard
defb 'K' ; channel ...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…
... /> cl_str_lu:
defb 'K', close_str - $ ; keyboard
defb 'S', close_str - $ ; screen ... /> set_work:
ld hl, (worksp) ; clear
ld (stkbot), hl ; workspace ... set_stk:
ld hl, (stkbot) ; clear
ld (stkend), hl ; the ...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 /> ld de, 0 ; clear DE
ld hl, ( ... /> ld de, mem_2_4 ; temporary buffer
push hl ; stack line ... ln_to_str:
push de ; store buffer address
ld bc, - ... ld (de), a ; store in buffer
inc de ; next ...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 e, 0 ; clear E
call set_pal ... hl, palbuf ; address palette buffer
org ...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…
... jump
; THE 'KEYBOARD INPUT' SUBROUTINE
org 0x102f ... change
cp a ; clear carry flag
ret ...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…
... assumes the screen is already clear, so you would need to ... clear the edit area before reprinting ... text to a 0-terminated buffer and then call fzx directly ...Clear the screen from assemblerI want to clear the screen before I draw my graphic elements on it. Speed is not important so I was thinking of using the rom CLS option if that is p…
Here was my code to clear or set a buffer
[code ... ]
; clear_mem/set_mem
; hl = memory to clear ... whether you want to clear or fill a buffer with the same ... a backbuffer so had to clear that as well as the ...Just brought my first ZX Spectrum+ help please!I need some help please guys! Just brought my first ZX Spectrum +, I never had one of these back in the days so I know nothing about them! All is …
Just to be clear, number keys should produce numbers ... is a problem with the keyboard membrane (or the tails/ribbons ... contact in the 5 way keyboard connector, then briefly touch the ...Please explain how a Kempston interface circuit works.Can someone help me understand how a Kempston joystick interface works, as I want to design and build my own as an experiment. I understand switches…
... the data bus. Whereas Sinclair keyboard press types go low so ... trick in using the same buffer chip to do the read ...Spectrum+ keyboard problemGot two speccy plusses both with exact same problem. Both have new membranes and both won't do as they are told, basically it boils down to symbol sh…
So, just to be clear - the suspect keyboard tops work fine when attached ...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 …
... "stream-like"? To make myself clear: I'd like to compress ... keep decompression within this circular buffer simply executing [B]RES 4 ... code to require a smaller buffer, although this will reduce ... it. The penalty on extra buffer size and performance issues ( ...ZX Spectrum + Please help!I wonder if anyone can help? I purchased a ZX Spectrum + from a Car Boot Sale last year, boxed, with games and leads. The problem is, it won't tune i…
... sound socket and hear if keyboard clicks are present from there ... is not mentioned, not very clear advice to offer a newbie ...Elite Kickstarter ProjectAs some of may know Steve Wilcox of Elite is currently close to raising ?60k via Kickstarter to begin manufacturing a USB spectrum keyboard. I have g…
... begin manufacturing a USB spectrum keyboard. I have grave concerns in ... Kickstart him but to be clear this is not about vengeance ...Elite Kickstarter ProjectAs some of may know Steve Wilcox of Elite is currently close to raising ?60k via Kickstarter to begin manufacturing a USB spectrum keyboard. I have g…
... begin manufacturing a USB spectrum keyboard. I have grave concerns in ... Kickstart him but to be clear this is not about vengeance ...Elite Kickstarter ProjectAs some of may know Steve Wilcox of Elite is currently close to raising ?60k via Kickstarter to begin manufacturing a USB spectrum keyboard. I have g…
... begin manufacturing a USB spectrum keyboard. I have grave concerns in ... Kickstart him but to be clear this is not about vengeance ...Elite Kickstarter ProjectAs some of may know Steve Wilcox of Elite is currently close to raising ?60k via Kickstarter to begin manufacturing a USB spectrum keyboard. I have g…
... trust them when it's clear your interests don't come ... Kickstarter campaign pitch for the keyboard. As an iOS developer myself ...Elite Kickstarter ProjectAs some of may know Steve Wilcox of Elite is currently close to raising ?60k via Kickstarter to begin manufacturing a USB spectrum keyboard. I have g…
... . They cannot guarantee this keyboard won't be useless without ... Kickstarter project, not just the keyboard itself. Elite's business model ... both building and selling the keyboard, and selling Elite's ... to make this point quite clear. I vaguely remember there were ...
