-
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…
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…
... :
push bc ; stack both
push hl ... 255 ; unused locations (ROM 0)
.endif
Timex 2068 hi-color / hi-res modes.Hello. I know this is not a Timex forum but since it is a very close relative of the Speccy I thought I'd ask my question here. Does anyone know …
... ;733876]
dumbed-down the ROM
[/QUOTE]
Really ... system, tape loader / tape tester / calculator and the Spanish 128 simply ...Timex 2068 hi-color / hi-res modes.Hello. I know this is not a Timex forum but since it is a very close relative of the Speccy I thought I'd ask my question here. Does anyone know …
... /> Spanish: a running calculator in BASIC. UK: standalone calculator (not usable with ... not just keep the Spanish ROM and just translate the error ... the TS2068 with a Spectrum ROM in America. I think the ...Documentation for SP1 for Z88DK?(I was going to post in [URL="http://www.worldofspectrum.org/forums/showthread.php?t=11729"]the other thread[/URL], so if a mod thinks this should go…
... initialized to point into the ROM character set so out of ... /> #pragma output STACKPTR=53248 // place stack at $d000 at startup
The stack has to be moved further ...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 …
... of code into BAS ROM
;----------------------------- < ... 19 ;MAIN4 =4867 on stack
DEC HL ...What Spectrum projects (Software/Games/Utility)(Hardware)(Others) are you working on?So, basically that :) You dont have to give names or more clues if you dont want to ;) Also, if you are working on more than one, you can tell all of…
... allow you to use the Calculator directly in the Program Editor ... style used by the 48K ROM, i.e. without indentation ...Idiots Guide......To machine code, or assembler language...whatever the appropriate term is Basically at this stage I want to fiddle about and try and get used to…
... feel comfortable around the stack and some ROM calls
2 ...Idiots Guide......To machine code, or assembler language...whatever the appropriate term is Basically at this stage I want to fiddle about and try and get used to…
... PDP-11 assembly language fyi). Stack relative addressing -- that is all ... 's snprintf and then the ROM to print the result.
stack
ld hl,_result ... 'm a bit rusty with ROM code
pop hl
Help with File Compressor by Mladen PopovicHi, I'm trying to compress BombJack (MCM) and transfer it to a +3 disk (Yes I own the original game :) ). I'm unsure about the addresses to enter in…
... . Taking into account that the ROM's TEST_ROOM routine requires at ...
add hl,sp ;HL=stack pointer
ld de,(23730 ...Help with File Compressor by Mladen PopovicHi, I'm trying to compress BombJack (MCM) and transfer it to a +3 disk (Yes I own the original game :) ). I'm unsure about the addresses to enter in…
... " error (the check in the ROM is for $F000=61440). The ... beforehand, such as the machine stack. I don't know where ...Help with File Compressor by Mladen PopovicHi, I'm trying to compress BombJack (MCM) and transfer it to a +3 disk (Yes I own the original game :) ). I'm unsure about the addresses to enter in…
... " error (the check in the ROM is for $F000=61440). The ... beforehand, such as the machine stack. I don't know where ...PlusDlite problems with 128K modelsLast year I developed the PlusDlite, and already shipped out a couple of them. Only recently I discovered some problems with 128K models. I remember…
... the NMI routine is activated (rom entry point at adress #66 ... and returns to the 'main' ROM at address #0052.
That ... ' ROM
paged in.
004F UNPAGE_HL PUSH HL Stack return ...Clear command in z80Hi, How would I replicate what the basic clear command does in z80? Do I need to change the stack pointer as well as setting ramtop (23730)? If I se…
... very cursory look at the ROM) you could CALL $1EAF to ... an extra value off the stack, so watch for that... And ... error address to the next stack location.
The whole ... source - see the Complete Spectrum ROM Disassembly.
D ...Clear command in z80Hi, How would I replicate what the basic clear command does in z80? Do I need to change the stack pointer as well as setting ramtop (23730)? If I se…
... /+2 it is $1a10 in ROM.0, and for the +2A ... is $1207 in ROM.1 . In addition, the stack structures at this ... still there in the BASIC ROM in all models, but calling ...Clear command in z80Hi, How would I replicate what the basic clear command does in z80? Do I need to change the stack pointer as well as setting ramtop (23730)? If I se…
... /+2 it is $1a10 in ROM.0, and for the +2A ... is $1207 in ROM.1 . In addition, the stack structures at this ... still there in the BASIC ROM in all models, but calling ...New Game:Killer BeesI have ported one of my favourite games for the Phillips G7000 to the ZX Spectrum. Killer Bees, I spent hours playing this as a kid. The original g…
... RAM: 128 bytes
BIOS ROM: 1024 bytes
just ... or 16 bytes worth of stack. Memory fuzzy on that ? from ...+3 Disk drive motorHi, I'm creating a disk file menu selector. I was wondering how to turn off the +3 drive motor and the motor timeout check from Basic (poking the co…
... the +3DOS ROM, you must first set the stack some place where ... routine, you must page in ROM 2 (obviously), and also RAM ...+3 Disk drive motorHi, I'm creating a disk file menu selector. I was wondering how to turn off the +3 drive motor and the motor timeout check from Basic (poking the co…
... the +3DOS ROM, you must first set the stack some place where ... routine, you must page in ROM 2 (obviously), and also RAM ...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…
... +3DOS, you must put the stack below 49152, page ROM2 and ... dd_l_off_motor
; page BASIC ROM
ld a,$10
PlusDlite problems with 128K modelsLast year I developed the PlusDlite, and already shipped out a couple of them. Only recently I discovered some problems with 128K models. I remember…
... is used by the +D ROM to call a routine in ... the 48K ROM. IIRC, to get back to ... +D ROM the NMI entry point is pushed on the stack, hence ...JP (HL) confusionokay.... JP nn will jump to memory address nn. JP (HL) ,I assumed would read the contents of memory address HL and jump to the location and be a gre…
... 'DAD SP' (Double-byte ADd Stack Pointer). This does follow the ... was so very costly, and ROM not much cheaper, modern RISC ...SCF/CCF flags - new discoveryI can't believe that no one is interested in discussing the additional, previously undocumented internal state of the Z80 CPU I have discovered recen…
... and then checks if the stack gets clobbered could potentially get ... not any instructions in RAM/ROM, how is this a problem ...FUSE serial communication sample anyone?Hi, in [URL="http://manpages.ubuntu.com/manpages/precise/man1/fuse.1.html"]FUSE man pages[/URL] one finds switches for serial comms. By using --inte…
... spectrum, using IY when rom routines run can be a ... change IY, suddenly the rom routines are indexing into some ... at your stack frame which means the ROM routine may ... into your C progam's stack at worst.
rom changes IX anywhere; I ...Plea for new hardwareI'm posting this as a poll as I want to judge if I'm a solo loon going on about this, or if people really are interested in either of the following S…
... -screen and mapped over the ROM; then, like SPECTRA, it would ... for writes. Then you can stack two or more boards to ...Plea for new hardwareI'm posting this as a poll as I want to judge if I'm a solo loon going on about this, or if people really are interested in either of the following S…
... -screen and mapped over the ROM; then, like SPECTRA, it would ... for writes. Then you can stack two or more boards to ...ESXDOS 0.8.5 and .Z80 on +2B or +3Last week I received some .Z80 snapshot files from a DivMMC EnJOY! user to test. These files didn't work on his ZX Spectrum +2B. [URL="http://benophe…
0x1f3d is the PAUSE code. The other thing to consider besides the ROM / RAM position is the state of the stack. If there are returns to addresses that don't exist, that will also cause crashes.Fixing my old ZX Spectrum 48K issue 4AHi Guys, I trying to fix my old Spectrum 48K. Looks like my dad used a wrong power supply as the ULA had a bit missing and so did the 7805. So I rep…
... RAM test that the ROM program does is just ...
Some faults allow the ROM program to decide that the ... is called the machine stack or just "stack" for short. It ... a 16k machine, the stack will be in the " ... " RAM. So sometimes the ROM program gets as far as ...Fixing my old ZX Spectrum 48K issue 4AHi Guys, I trying to fix my old Spectrum 48K. Looks like my dad used a wrong power supply as the ULA had a bit missing and so did the 7805. So I rep…
... RAM test that the ROM program does is just ...
Some faults allow the ROM program to decide that the ... is called the machine stack or just "stack" for short. It ... a 16k machine, the stack will be in the " ... " RAM. So sometimes the ROM program gets as far as ...RS232 on Spectrum 128KDoes anyone actually use the RS232 port on the Spectrum 128K? Is there anything useful that can be done with it? I know about the keypad with the Sp…
... RS232 to other devices. The ROM have some routines that can ... code you should use the ROM routines or make your own ... , in the 128k editor and calculator functions as a numeric keypad ... the timing loops of the ROM routines to compensate for that ...
