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"Programming the Spectrum in Assembly" series in Micro MartI see that Shaun Bebbington is starting a series of articles in Micro Mart magazine on how to program in assembly for those who might know a little b…
... experiences more contention on a +2A/+3 than a 48K[/QUOTE]
2A/+3 or Pentagon timings:
2A/+3 gives the lowest number, and ... -
+3e ROMs in AT28C256I've been thinking about loading the +3e ROMs in a E2PROM (AT28C256) to make the upgrades easier. It seems that is TTL compatible, and it takes +5v V…
... Vpp pin.
If +2A/+3 schematic shows Vcc (+5V) wired ... -
RGB SCART Not Working on ZX 128K (heatsink)I've just received a SCART RGB to HDMI converter and it is not working with my ZX 128K (heatsink). I do have the correct 128K SCART cable (which is d…
... attention mostly to 128k vs +2A as that is what I ... about 128K, +2 RGB vs +2A,+3. Same thing with the cable ... -
RFC: ZXI hardware interface standardisationReposted from c.s.s to reach a wider audience [QUOTE=Andrew Owen] You may have noticed that there are more people making add-ons for the Speccy than…
... possible, at least on pre +2A/+3 Spectrums, which have a straight ... -
PSU differences for the n00bHi all, im the [B]n00b[/B] in question lol Sorry folks in advance for this cos its prolly been asked a million gazillion times! Im currently in po…
... number of differences between the 2a 3+ 128s and the rest lol ... 'm pretty sure that my +3 used to have a power ... supply that said +3 on it, amongst other things ... -
Knight Lore 128kHello everyone. The other day i got a VERY nice version of Knight Lore with hacked in AY music. This was not an ordinary hack like many others with …
btw. on +2A/+3 you need to start the game from USR0 mode... works fine from the menu loader on +2grey/old 128k speccies though :) -
Games wantedHI :-) Can anybody give me a snapshot version of one man and his droid 2 & orb quest as i cant get tzx or tap versions to work on my emuzwin 2.7 emul…
... to another 128k model +2, +2A, +3, or even one of the ... -
+3 assembler questionI was wondering if anyone could give any suggestions as to how to get this bit of code working on the +2A/+3 in 128k mode. It works on the +128k/+2 i…
... BASIC routines then on the +2A/+3 you'll get the syntax ... -
Knight Lore 128kHello everyone. The other day i got a VERY nice version of Knight Lore with hacked in AY music. This was not an ordinary hack like many others with …
... =Tom-Cat;462454]btw. on +2A/+3 you need to start the ... that only on Pentagon and +3 models (with USR0), everything works ... -
Adventure Gamebook Solver"It would take me ages to solve that adventure gamebook without AGES" - is what someone might say if they didn't have the [url=http://www.users.globa…
... a crash.
* Fixed the +2A/+3-in-128k mode error handling ... -
Memory mapping: Pentagon compatibility?I'm writing something that will rely heavily on the Spectrum's ability to switch screen buffers in hardware (port 0x7FFD). The original Spectrum 128K…
... disable paging
D6 = bank 3 ;256 kB memory
D7 ...
[B]ZX Spectrum 128+2A / +3[/B]
[U]port 7FFD ... if allram is set (see +3 manual)
... B]
D4 = bank 3 ;256 kB memory
D6 ... U]
D0 = bank 3 ;256 kB memory
D1 ... -
Memory mapping: Pentagon compatibility?I'm writing something that will rely heavily on the Spectrum's ability to switch screen buffers in hardware (port 0x7FFD). The original Spectrum 128K…
... for RAM 0,1,2,3
A=5 for RAM ... 4,5,6,3
A=7 for RAM ... 4,7,6,3
Keeping bit 3 of A low ... function to switch off the +3 motor once the program has ... as on ZX Spectrum 128+2A/+3 (need A14=1). Result - on ... -
Using Interface II joystick in kempston-only gamesHi everyone! It's me again, bothering you with new crazy ideas :) I have recently acquired an Amstrad +2A Speccy with a joystick and built-in Interf…
nice code velesoft, I like that!!!
as for shadow of the unicorn, dunno about the joystick but
1) it works nicely in allram mode on +2a/+3 without interface and
2) it's crud anyway!!! -
Spectrum +2a / +3 SCART LeadsEvening all, Over the past week or so I've tried two different Spectrum RGB SCART leads from two different Ebay sellers, on a Spectrum+2A and a Spec…
... a 128/+2 and a +2a/+3, so if the lead was ... designed for the Spectrum +2A or +3 is not suitable for use ... Amstrad released the Spectrum +2A and +3 they kept the same style ... output by each pin. The +2A/+3 socket now outputs RGB signals ... -
Help me understand ZX RGB signal (long)This will be a long post so please bear with me and most importantly help me. I have a 128K+ and +2A that I'm trying to get working with my 15kHz RG…
There are subtle differences between the signal generated by a 128/+2 and +2a/+3.
This document by Paul Farrow seems to explain them:
[url]http://mts.speccy.cz/doc/128_rgb.pdf[/url] -
Help me understand ZX RGB signal (long)This will be a long post so please bear with me and most importantly help me. I have a 128K+ and +2A that I'm trying to get working with my 15kHz RG…
... finally finished analyzing and testing +2A,+3 SCART cable from two different ... out. It displays for about 3 seconds, then it goes out ... seem as clear as the +2A picture. Maybe it's because ... -
Time function?How do you do a timer? Example: Start timer If timer = 10 seconds then reset timer Thanks
... in this section in the +2A/+3 manual: [url]http://www.worldofspectrum ... -
Flash based rom replacement board for +2A/+3I'm sure I already started a thread about this, but I can't find it... Anyway, this post's to say that I've just sent off the order for the printed …
... somewhere for +3 that copies ROM to a +2a/+3 64K RAM configuration ... -
+2A/+2B/+3/+3B researchdoing my redrawing/correcting of the +3 schematic I'm uncovering lots of oddities in the service manuals. I am trying to work out what really exists…
... br /> 1) There are two +2A/B circuit boards (ISSUE 1 ... the name from the +2A to +2B, however both ... ISSUE 2 of the +2A/B board has the ... U] +2A built with the "+2A/+3" circuit of the +3 service manual ... from the "+2A +3" diagram from the +3 service manual and ... -
+2A/+2B/+3/+3B researchdoing my redrawing/correcting of the +3 schematic I'm uncovering lots of oddities in the service manuals. I am trying to work out what really exists…
... version 1 is just the "+2A circuit" which is in fact ... the +3 motherboard with different component population ... that leaves the mysterious version 3...
Looking closely ... ve seen.
(the "+2A/+3 circuit" used numbers in the ... -
DIVIDE games crashingMy DIVIDE arrived today complete with 512K CF Card, ready to go. First impressions, really good - simple file browser works fine & games load no prob…
... port #7FFD on ZX128/+2/+2A/+3 and game crash or work ... possibility load in ZX128/+2/+2A/+3 models but exist also better ... -
DIVIDE games crashingMy DIVIDE arrived today complete with 512K CF Card, ready to go. First impressions, really good - simple file browser works fine & games load no prob…
... port #7FFD on ZX128/+2/+2A/+3 and game crash or work ... possibility load in ZX128/+2/+2A/+3 models but exist also better ... -
Loading BASIC programs stored as "bytes:"Hi all, I have a question regarding loading BASIC programs, that I managed to save as machine code (I suppose) when I was a child, as a result of e…
... - and you'll need a +2A/+3 for this (or an emulator ... set to +3 mode) - I'd go into +2A/+3 BASIC and type ... -
Will +2 Powersupply work on +3 speccy?I've just ordered a +3 Spectrum without the power supply. I have a +2 (not +2a) power supply and wondered if this would be ok to use with my new +3?
... .[/QUOTE]
The +3 and the +2A are actually the same ... />
but yes, both the +2A/+3 and the +2B use the ... -
Will +2 Powersupply work on +3 speccy?I've just ordered a +3 Spectrum without the power supply. I have a +2 (not +2a) power supply and wondered if this would be ok to use with my new +3?
[QUOTE=guesser;485410]The +3 and the +2A are actually the same computer ... />
but yes, both the +2A/+3 and the +2B use the ... my PSU used to say +3 on it, I'm sure ... the other way round?) and +2A/+2B/+3 all the same. -
Alien8 will not run on Divide?I can't seem to get Alien8 running on my 128+ with Divide. I have the original tape and have loaded into an emulator to create a snapshot, (.z80) an…
... port #7FFD on ZX128/+2/+2A/+3 and game crash or work ... possibility load in ZX128/+2/+2A/+3 models but exist also better ... -
A BASIC quiz[URL]http://equ.in/ox/spectrum/basicquiz/[/URL] On first try: 14/20
... (PLAY), have never used +2/+2a/+3, forgot you can have spaces ...
