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BIN2BAS (load BASIC text into emulator) utilityI've nearly finished testing this. It allows a BASIC program to be loaded from a text file in any emulator which has a "load binary" option. I was wo…
... wrong return address in the stack entry addressed by (ERR_SP). ... using the 128k Editor ROM 0 routine for syntax ... restriction by putting the stack down in the display ... to calling any Editor ROM routines and putting it ... not only in a different ROM, it's at a ... -
BIN2BAS (load BASIC text into emulator) utilityI've nearly finished testing this. It allows a BASIC program to be loaded from a text file in any emulator which has a "load binary" option. I was wo…
... simpler way of handling the stack conflict - I use a "roaming ... " stack. Prior to calling ROM0:$026B " ... line). The ROM routine will then switch the stack to that low ... the program expands the temporary stack stays ahead of it all ... -
BIN2BAS (load BASIC text into emulator) utilityI've nearly finished testing this. It allows a BASIC program to be loaded from a text file in any emulator which has a "load binary" option. I was wo…
... the first time the Shadow ROM is paged, not only does ... rather unhelpfully trashes the machine stack - so I had to add ... -
Keyboard scanning routines / techniques?What keyboard scanning routines or techniques do people use? I'm looking to write something which doesn't rely on the ROM-based keyboard scanner, an…
... , but retaining compatibility with the ROM code. Then I want to ... is done during interrupt, before stack switching, I'm keen to ... -
16k programmingHi all, If I want to code something for a 16k (or any spectrum) my understanding was that if I CLEAR below 24064 and put all the code above it up to…
... into account that the stack pointer is located at ... at the beginning of your stack space (the opoosite address ... as you hace your stack pointer, which will be ... is, 100 bytes for the stack).
Now, ... the loaded block). The ROM proceeds to load SP with ... -
Keyboard scanning routines / techniques?What keyboard scanning routines or techniques do people use? I'm looking to write something which doesn't rely on the ROM-based keyboard scanner, an…
... "); /* Ptr to API name on stack, then RST 0x10 */
u ... RAM using IM2 and in ROM.
There are also ... -
Varios +3(e)DOS questions?I'm converting tape games to disk, for being used in my +3e. I'm trying to convert them to standard BASIC loaders, so files could be copied using BAS…
... be +3DOS ROM and RAM 5,2,7. The stack must be ... your loader code (and the stack can go there, too).
Buzzer sounds tips'n'tricksSo I have an ARM Cortex M3 with a buzzer connected to its GPIO pin. And because I read this forum I know that there is no need to add a separate buzz…
... to do interrupting drums using ROM data (which isn't necessarily ... on the stack and load hl with a target ROM address. $3000 ... /> dlpx: ld a,(hl) ;read ROM data
or %11100111 ;mask ...Some thoughs about fast scrolling on 128 modelPlease, consider this article as technically interesting concept not a proven algorithm. ONE The fastest scrollers use long sequence of PUSH inst…
... to find an address in ROM, which looks like #xxFF and ... on the minute detail of ROM implementation.[/QUOTE]
Does ... ROM procedures in general constitute a 'dirty' solution? What about abusing stack ...Some thoughs about fast scrolling on 128 modelPlease, consider this article as technically interesting concept not a proven algorithm. ONE The fastest scrollers use long sequence of PUSH inst…
... ROM procedures in general constitute a 'dirty' solution? What about abusing stack ... as the result. Using stack for data transfers is clearly ... that keep such uses of stack "safe", but even this ... solution compared to using a ROM routine in general. Any major ...CODE SCREEN$ in MCIs there any way of determining what character is displayed at a certain co-ordinate from machine code like the 'IF CODE SCREEN$=' arrangement in bas…
... you may call to the ROM routine (PASMO assembler):
call STK_FETCH ;fetch string from stack
ld a,b ;string ...A loading screen for Mr. HeliWell, I've managed, once more, to make another pic in less than two weeks with ZX Paintbrush tool from Klaus Jahn and show it for all of you. As seve…
... onto
dec hl ; stack as 3rd item
ld ... onto
dec hl ; stack as 2nd item
ld ... /> ld (hl), $00 ; stack as 1st item
dec ... bit 4: 0=ROM 0 (128K Editor), 1=ROM 1 (48K ... return to addresses on the stack
;
end
...A loading screen for Mr. HeliWell, I've managed, once more, to make another pic in less than two weeks with ZX Paintbrush tool from Klaus Jahn and show it for all of you. As seve…
... onto
dec hl ; stack as 3rd item
ld ... onto
dec hl ; stack as 2nd item
ld ... /> ld (hl), $00 ; stack as 1st item
dec ... bit 4: 0=ROM 0 (128K Editor), 1=ROM 1 (48K ... return to addresses on the stack
;
end
...esxDOS v0.8.5 released (with TR-DOS emulator)Yup, you read right! Now with TR-DOS emulation! More info and download here: [url]http://www.esxdos.org/[/url] Enjoy :)
... $3dxx automapper), a port-based stack to enable reentrancy in esxDOS ... the possibility of a bigger ROM. We also asked Velesoft for ...esxDOS v0.8.5 released (with TR-DOS emulator)Yup, you read right! Now with TR-DOS emulation! More info and download here: [url]http://www.esxdos.org/[/url] Enjoy :)
... $3dxx automapper), a port-based stack to enable reentrancy in esxDOS ... the possibility of a bigger ROM. We also asked Velesoft for ...Games/Programs making use of DivIDE featuresHello :) I have a question: I may be wrong, but it looks like the DivIDE and similar interfaces for the ZX Spectrum are almost exclusively used for …
... a complete standards-compliant network stack. And there's nothing to ... keep in mind a hardware stack is superior to a software ... stack, particularly on small machines. ... />
Except when the hardware stack has bugs in it. Contiki ...Full 16*16-digit BASIC multiplicationI liked Andre Adrian's 32-bit long multiplication routine so much that I decided to a decimal version. After all, 2^63 is only 9223372036854775808, a…
... to 9999, as using the ROM routines was too slow. They ... ;STK_ST_0
;reorganise the machine stack so that this string
Experimenting with turboloadersHello, My first post, having lurked here for a while. I'm a lifelong computer nerd, Spectrum fan since childhood in the eighties, and have recently…
... bc ; fetch data length from stack
ld a,b ; ... ; save new data length on stack
jr .read_byte ; fetch ... br /> jp z,0x1b7b ; ROM routine indicating BREAK (code L ...Confounded DEF FNCan anyone see why this is going wrong? I've been tinkering with it since tea time and got nowhere. [code] 2 DEF FN t$(n,t,d) =STR$ INT (n/t)…
... way to get both the calculator & machine stacks included when ...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…
... equ $ - 2 ; storage for entry stack pointer
;; 47loader ... ld (.sp),sp ; save initial stack pointer
;; and ... ;; same colour scheme as the ROM loader
macro ...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 …
... through the +3DOS ROM disassembly. Could the ... br /> ; ix = char *
; stack = char *string
; ... generate digits onto stack in reverse order
; ... push af ; digits onto stack
ld ...sinclair watch on antiques road show:) and his radio also.. haaaw much ? next week I will be on it.. with my classic collection of cardboard covered sinclair releases.. none of that …
... ]
yer for a stack of errm 10-20 + a ... />
I have a commodore calculator here, it's from the ...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…
... contain the information about which ROM (1) and which bank of ... CLEAR 49151. This moves the stack below paged RAM.
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…
... a sane 48 BASIC stack needed to be constructed ... ;; to do is rebuild the stack
ld hl,(0x5cb2) ; ... 0x3e ; place end-of-stack mark at RAMTOP
... hl,0x1303 ; stack the address of the ROM error handler
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…
... also saves the machine stack including the error return ... To preserve the GO SUB stack as well use [url ... br /> ld sp,hl ;reset stack
ld ... br /> MCCONT: push hl ;stack ROM return address
LD A ...Break into programIs there any way of stopping people using the break option in my software productions so they can list the code.
... causing the error. POKE the stack address pointed to by ERR_SP ... ;STMT-RET (+2A/+3/+3e ROM.1)
push hl
Break into programIs there any way of stopping people using the break option in my software productions so they can list the code.
... ), but the address on the stack pointed to by ERR_SP, this ... address being where the ROM will jump to after pressing ...
