-
I know it's part ZX81 but what's the rest of it?You can see the ZX81 motherboard in the corner but I have no idea what the rest does, it powers up but I haven't managed to get the screen to tune in…
... (or possibly two) switches for ROM selection.
The other one ... and the left-side DIN socket. -
I know it's part ZX81 but what's the rest of it?You can see the ZX81 motherboard in the corner but I have no idea what the rest does, it powers up but I haven't managed to get the screen to tune in…
... cable clamped onto the motherboard ROM socket and diving under the RAM ... to the protruding grey edge socket (possibly a Maplin kit board ... -
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…
... +2B boot off ROM3 (48k ROM) instead of ROM0 (The menu ... with the one 128k ROM on IC7 socket and without the divIDE ... -
Issue 3 board with strange piggy-back boardIn case you are interested. I?ve never seen something like this before. I have an Issue 3 board here. When I opened the case and found a strange pig…
... have it full of customised Rom code, especially on bank0 I ... have my HDD rom which was hard work from ... IC leg remaining in the socket of IC 24. Checking again ... -
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 …
... ;HD_11, 23789
RST 8
DEFB #32 ... (191),A ; Xx SHD rom
DEC 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…
... defs 96, 255 ; unused locations (ROM 0)
.endif
... defs 75, 255 ; unused locations (ROM 0)
.endif
... 0x2320
circle:
rst get_char ; get current character< ... ; error if not
rst next_char ; next character
... -
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…
... you don't run the ROM ISR, you'll never detect ... does not depend on the ROM code.
Instead of ... there.
The ROM ISR (rst 56) will reenable interrupts on ... -
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…
... ; return if so
rst error ; else
defb ... ; handle NEW 128
rst error ; else
defb ... (ROM 0)
org 0x13e9
new_128:
rst start ... org 0x1408
del_error:
rst error ; else
defb ... -
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…
... /> defs 21, 255 ; unused locations (ROM 0)
.endif
rst error ; and call
defb ... -
eBay 128K Spectrum RGB cables overheat the Spectrum!?Hi everybody, For a long time I've wondered why Spectrum 128K Toastracks were overheating when using my Retro Computer Shack RGB SCART cable. Today …
... control voltages for the SCART socket. The approach of using CSYNC ... the fact that the monitor socket was never designed to drive ... to the discussion: RAM tester ROM has been just successfully used ... -
Using +3e ROMs without physically replacing internal ROM chips?Is there any external hardware available which can logically replace the internal ROMs of a +3 with, e.g. the +3e ROMs, *without* having to open up a…
... flash programming tool as a ROM. I have been known to ... can run an external speccy ROM, or load snapshots. The other ... way when I updated the rom image because although the chips ... to remove from the plcc socket without damaging it. :)
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…
... injecting data through the EAR socket from a PC. However, it ... hypothetical Versaload with a reliable ROM-style loading core would probably ... that works similarly to the ROM loader is the way to ...Clashbasher a new interface to reduce colour clashI've been working on this for a while now. [IMG]http://markamy.uwclub.net/cauldron.JPG[/IMG] Basicly its an add on for a 48k spectrum, which reinte…
... beeper output to the scart socket to provide sound through the ... even by writing to the rom memory ( the clashbasher logic just ... memory at that address is rom.
c) I've ... to ie 1 normal, 0 rom, 2 and 3 upper ram ...Spectrum CP/MHello.. Just out of curiosity, has anyone actually used +3 CP/M for any practical purpose? I remember booting it up a couple of times years ago, jus…
... would be to use an RST instruction take the place of ... calls (the benefit of using RST to trigger this is that ... decode).[/QUOTE]
Use RST 0 then. But you'll ... either need a custom ROM or a trap.Spectrum CP/MHello.. Just out of curiosity, has anyone actually used +3 CP/M for any practical purpose? I remember booting it up a couple of times years ago, jus…
[QUOTE=aowen;737355]Use RST 0 then. But you'll either need a custom ROM or a trap.[/QUOTE]
To do this kind of thing on a Spectrum compatible, that's pretty much a given :-)Downloading code to physical hardwareHi folks, Back in the day, my devkit was a TRS-80 and I had a simple connector device from the TRS-80 parallel (printer) port to the expansion bus o…
... microdrive and load your test ROM in all-RAM mode.[/QUOTE ... ) Wire board and DIP 28 socket in a way to expose ...Downloading code to physical hardwareHi folks, Back in the day, my devkit was a TRS-80 and I had a simple connector device from the TRS-80 parallel (printer) port to the expansion bus o…
... ) Wire board and DIP 28 socket in a way to expose ... ]
I used a ROM emulator (made by LaesQ) when ...IF1bis StabilityI just thought I would start a different thread relating to the IF1bis, and leave the copyrighters to it elsewhere...:-P I've had mine for a few mon…
... thats my PSU plug or socket being a bit loose.
ROM will page out. Pressing the ...Timex TC2068 ROM dump help.Hi, can someone point me how can I dump a Timex TC2068 rom. I want to try it on my machine for replacing a rom on other broken TC2068. Thanks, Chapas
... are two ROMS -- the HOME rom which is 16k and the ... to directly save the HOME rom with a simple SAVE "HOME ... quickly. Then save the HOME rom contents from there with SAVE ... on the circuit board or socket. You'll have to consult ...Timex TC2068 ROM dump help.Hi, can someone point me how can I dump a Timex TC2068 rom. I want to try it on my machine for replacing a rom on other broken TC2068. Thanks, Chapas
... are two ROMS -- the HOME rom which is 16k and the ... to directly save the HOME rom with a simple SAVE "HOME ... quickly. Then save the HOME rom contents from there with SAVE ... on the circuit board or socket. You'll have to consult ...New CPU and Spectranet oddity.I have no reason to suspect this problem is due to a fault/poor design of the Spectranet, but understanding what it does at system initialisation may…
... to guarantee that regardless of ROM, we'll have a RET ... I can find an IC socket. If not it'll be ...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…
... 's snprintf and then the ROM to print the result.
rst $10 ; forgive me, I'm a bit rusty with ROM code ...New CPU and Spectranet oddity.I have no reason to suspect this problem is due to a fault/poor design of the Spectranet, but understanding what it does at system initialisation may…
... couple of traces underneath its ROM socket have been repaired (by me ...Outputting debug trace to RS232 (assembly)Hi Guys, I'm working on a game at the moment (written in assembly) but I am really needing to write out a debug trace of what is going on with the p…
... /infoseekid.cgi?id=2000371"]Shadow ROM Disassembly [/URL]
in ... ]
ld a, 'f'
rst 0x8
defb 0x1E
Outputting debug trace to RS232 (assembly)Hi Guys, I'm working on a game at the moment (written in assembly) but I am really needing to write out a debug trace of what is going on with the p…
... are using the standard IF1 ROM and as the emulator will ... (at the ORG point). The RST 8 works, and IF1 pages ... but it crashes (RST 30 at 00BCh in IF1 ROM) and returns ...Outputting debug trace to RS232 (assembly)Hi Guys, I'm working on a game at the moment (written in assembly) but I am really needing to write out a debug trace of what is going on with the p…
... ]
0x00BC in the IF1 ROM is the "START-4" routine ... calls[/QUOTE]
The RST 08 call jumps to START ... returning from a IF1 main ROM call (it is not) and ... br /> START-4 performs the RST 30 to create the system ... isn't ready to calling ROM routines.DivMMC EnJOY! v2014.1Teaser: [url]http://www.youtube.com/watch?v=ea036HH25f8[/url] This is the board version that is designed for the custom case which is worked on at t…
... 's why a socket is chosen.
The ROM chip can be ...Is ESXDOS flexible enough to incorporate e.g. Spectranet commands?I was just discussing the idea with someone about the wish some people have to be able to combine interfaces such as DivIDE (Plus) / DivMMC EnJOY! wi…
... the routines are under the rom subdirectory (files starting w5100_*) however ...Mercenary 1+2 CompendiumDear all users of +3 disks, I am an eager fan of Mercenary game, in which I made a good deal of progress years ago. I was looking for some standart …
... disk. Mercenary don't use ROM routines to save/load, so ... had a version that use ROM routines, patching it to save ...
ld a,#18
rst #20
call #3C98
IF1Bis problems. The Edge of the Spectrum...Advice is sought from the learned on WoS. I just bought an Interface 1Bis from sunny South Africa. It arrived fast, but unfortunately doesn't work.…
... well as the SD card socket) the button was pressed for ... /> Then to page in the ROM I press the button for ... immediately to page in the ROM so the LEDs were lit ...
