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Quick test (2)Could I ask any 128 / +2 / +2A / +3 owners to test the new version of [url=http://www.shadowmagic.org.uk/spectrum/fusetest.tap]fusetest[/url] on thei…
... detects the difference between the 128K / +2 and the +2A / + ... 0x02)
Spectrum +2 grey
frame length...0x8000+0x94fc ... (b=0x01)
contended memory...failed (0x01)
High ... (b=0x01)
contended memory...passed
High port ... -
+2A, are they all this incompatible?My +2A does not seem to be faulty but the number of games that don't run on it are silly. Scooby Doo(Elite), Crazy Cars , Turbo Outrun, Vindicator(im…
... /B and the +3 have memory checking routines intergrated into the ... and still have a faulty memory somewhere?
If thats the ... Paul Farrow's, V1.02 128k memory tester ROM be used on ... +3 machines or just on 128k heatsink/+2 grey spectrums?
Could the ... -
MB02+ software and system developmentsThe following text was (before last modification) first published here: [url]http://www.sintech-shop.com/forum/board.php?boardid=20[/url] As discuss…
... on real ZX16/48/128/+2(grey) if register I is set ... as high byte of contended memory adress.[/QUOTE]
Okay ... one that came with your 128K model. -
Usr 0 ?I'm not sure I've ever seen this explained before, but why do some programs (only demos, as far as I can see, so far) need USR 0 mode when run on a 1…
... mode but with all the 128k memory and bankswitching still fully ... this command will disable 128kB memory and will available only ... file for ZX128 and ZX128+2(grey) with correct SPECTRUM command ... basic without reset and 128kB memory is available):
[URL ... -
Detecting Spectrum modelsIs there any sure-fire way a program can detect the model of machine it's running on (48K, +, 128, +2, +2A, +3, clones) even when running in the 48K …
... them up in the slow memory below 32768 and just ... want to use into higher memory before I call it. ... running on both 48K, and 128K / +2 in 48K mode. It crashes ... outright in 128K mode, but I'm ... speed of writes to the lower 16K and knocks the ... -
Where's the border line between a Spectrum and something else?I mean: there are purists out there that consider that anything that is not a true Sinclair Spectrum, with a true Z80 and a true ULA, and at most, 48…
[QUOTE=Madonna Mk 2;378134]NB: 128K models actually DO NOT pass ... memory serves well, I'd say that the "toastrack" and "+2 grey" models ... do implement the floating bus behaviour, and the only 128K ... -
Where's the border line between a Spectrum and something else?I mean: there are purists out there that consider that anything that is not a true Sinclair Spectrum, with a true Z80 and a true ULA, and at most, 48…
... ]If memory serves well, I'd say that the "toastrack" and "+2 grey ... " models do implement the floating bus behaviour, and the only 128K ... -
Games not compatible with real grey +2There are many threads about Spectrum+3/2A incompatibility issues but what about grey +2? I've found that games like Marauder and Skate Crazy don't w…
... , the issue of contended memory crashing does not affect the ... />
On the 128K/+2, there are contended memory pages that can be ... in contended memory). Thus, you get games in 128K mode where ... crash on the original 128K and and grey +2 models.
... -
Games not compatible with real grey +2There are many threads about Spectrum+3/2A incompatibility issues but what about grey +2? I've found that games like Marauder and Skate Crazy don't w…
... at executing code in contended memory (the region 16384-32767 ...
On the 128K/+2, there are contended memory pages that can be ... in contended memory). Thus, you get games in 128K mode where ... crash on the original 128K and and grey +2 models.
[/QUOTE ... -
zx spectrum+128k PSU problemLast time I bought zx spectrum+128k heat sink, but without PSU. What PSU can I use ? I have also spectrum 128+2 grey model with power supply. Is that…
... time I bought zx spectrum+128k heat sink, but without PSU ... ? I have also spectrum 128+2 grey model with power supply. Is ... not ?[/QUOTE]
The +2 grey model PSU will do just ... (same polarity, same voltage but lower amp output). -
Tau Ceti 128K on +3?does anyone know if there are issues with running [URL="http://www.worldofspectrum.org/infoseek.cgi?regexp=%5ETau+Ceti+-+The+Special+Edition$&pub=%5E…
... figured since it was a 128K game it should work ... in 128K mode. i'd normally ... with access to all the memory banks. does USR 0 ...
SPECTRUM command on ZX128/+2(grey model) rom switch to 48 ... work identical on all ZX128/+2/+2A/+3 models - reset ... -
I wonder how many still goingThere is always a healthy stock of 48k rubber keyed speccys on eBay. However whats the guess on the amount world wide that are still working/used? +…
... flakyness of the 4116 memory (possibly exacerbated by the ...
I think the 128K, +2 and +3 are likely to ... have the complication of memory that expires with the ... was given, all the 128K models worked fine, ... all showing symptoms of bad lower RAM - well, except ... -
BETA-DISC (TR-DOS) support in ZX emulatorsBETADISC 128 is original device designed for external use with ZX Spectrum 128/+2(grey). Russians ZX clones (Pentagon, Scorpion, ZX profi, Quorum, ZX…
... true, but 128 kB of memory is much more better. Many ... 't matter if it is 128k Pentagon, original Sinclair 128k or grey Amstrad 128k +2. -
New Game! Maritrini, Freelance Monster SlayerAfter experiencing the sweet taste of success, Maritrini woke up one fine day in a mess of bed sheets and with the biggest hangover she could remembe…
... suffer the snow effect. 48, 128k+ and +2 (grey) models do. This is ... register (and table) for IM 2 to be set at the ... , so beware when you switch memory pages! -
Robocop 3 and Spectrum 128K toast-rackHi all, we are going on with the tests on the new 128K emulator for the V6Z80p board, and we have found something odd: Robocop 3 (designed for the 12…
... ;631288]The 128K/128K+2 have different contented memory banks from 128K+3/128K+2A-B ... on the 128K/Grey +2 MkI. Don't know about the Grey +2 MkII (which ... -
Divide 2k11Hi All, I am thinking about buying a divide 2k11. Does anyone know if there are any compatibility problems with it and: a) 128k toastrack with inter…
...
- Why is my 128K in 48K mode when switching ... /> JUMPERS for ZX48 / ZX128 / ZX128+2(grey):
default settings
memory is enabled for software. DivIDE ... -
Spectrum +2 EPROM in Spectrum +2AHi, My friend Marc bought a +2A from Tim Abbott at the Spectrum 30 event. Back in the day there were companies selling +2 ROMs to put into +2As to r…
... grey +2 rom: DivIDE detects for drives then boots up to 128k menu ... drives then boots up to 128k menu, nmi starts fatware
grey +2 rom: DivIDE detects for drives then boots up to 128k ... does the (incorrect) memory contention exist on all grey+2's, or was ... -
Spectranet and toastrack issueI've been using my spectranet with no problems on my standard 48k but just started using it on the toastrack and am having an issue. That being that…
The problem is basically the 128K machine is a bit marginal, ... machines have since expired with memory problems). The intermittent problems didn ... don't have a working +2 grey to test to see how ... that (I do have a grey +2, I just need to get ... -
Spectranet and toastrack issueI've been using my spectranet with no problems on my standard 48k but just started using it on the toastrack and am having an issue. That being that…
... ]The problem is basically the 128K machine is a bit marginal ... machines have since expired with memory problems). The intermittent problems didn ... don't have a working +2 grey to test to see how ... that (I do have a grey +2, I just need to get ... -
Fully-addressed devices initiative (FADI)I would like to introduce an initiative for those who create new pieces of hardware containing legacy devices with well-known addresses. It says that…
... my own experience, 48K and 128K ULA are robust chips. They ... /128K Spectrums and a dead ULA is a rare failure. Low memory ... " it to a +2 grey by placing a +2 grey ROM chip into ROM1 ... -
Poke on +2 greyhi, should i poke 65535,0 or 65536,0 in the first case i get OK 0 but in the second one i get "B interger out of range,0:1" i am trying to load z…
... instructions for Zynaps say that +2 users should disconnect any extra ... - although it works OK in 128k mode for me - at least ... check the RAM on the +2 then there's an assembler ... to check the whole memory on a +2 grey[/url] thread, based on ... -
Testing a +2I recently picked up a non functioning Spectrum +2 Grey (Issue 3 board?), and am just beginning to go through and see what needs to be done to it. I …
... up a non functioning Spectrum +2 Grey (Issue 3 board?), and am ... />
But for the 128K models that way of bughunting ... , detach the powerlines from memory and reattach the chips one ... capacitors
3. Check memory function
a. Use diagnostic ... -
ZX Spectrum Pre-regulator DesignCarrying on from the "[URL="http://www.worldofspectrum.org/forums/showthread.php?t=44486"]Issue 2 crashes after about 30 mins[/URL]" thread... [QUOT…
... do have a Speccy +2 grey with 9V 2.1A PSU.
2 grey, you will need an even ... 9.0?C/W or lower) and use a 1N5822 diode ... will therefore work for a 128K ZX toastrack :smile:.
Wanted: broken motherboard!Does anyone have a motherboard for a 48k (any issue) that is currently not working? I'm looking to set up a test board for chips, and would like to g…
...
A toastrack or +2 will test both halfs.
2 board with higher memory chips socketed.
In a +2 there are two rows of ... upper row is high memory and 128K pages, D0 to D7 ... right.
The lower row is lower memory and some pages, ...Video on single transistor composite video modification for 48K SpectrumsI made a video on the single transistor composite video mod, using an Issue two Spectrum although it applies to all issues. Much better than the sing…
... a look at the 128K and grey +2 composite video outputs. They ... 48K video circuit, the 128K circuit produces composite video ... but sits on a lower DC offset. It is ... is another 0.7V lower. This is applied across ... of the TEA2000 in the +2.
Fortunately, ...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…
... off reads to the video memory into its own screen buffer ... mapped across the ROM and lower 16K address spaces. (That the ... .
[B]2. A 2-port joystick interface[/B] that ... ports, such as a [B]128K +2, +2A, +3[/B]. Or a ...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 …
... cables including RetroComputerShack are marketed 128K/128K+2(gray).
Do they mix ... :confused: ) ?[/QUOTE]
The grey +2 already includes circuitry to mix ... using a microcontroller with some memory to build a HDMI signal ...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…
... common: the hardware mode is ''+128k" and they were produced while ... specific to each ZX Spectrum 128k model.
The ... snapshots on a ZX Spectrum +2 (grey) can be achieved even easier ... .Z80 snapshot is loaded into memory, it is sufficient to have ...MISSING M1 LINE ON +48????I was posting questions about my DIVMMC enjoy not working on one of my +48`s and have now got round to testing if its cpu related.Trouble is the one …
... 48k, a plus, a 128k toast-rack, a +2 grey, a +2A, a ... 3 machines). Some 16k/48k/+/128k machines sometimes may work, but ... a machine code instruction from memory. It can then switch it ... 's own ROM into the memory map of the CPU and ...Burned finger temp on rubber 48k heatsink normal?Ok so i opened it up because a few keys started to act up and i noticed that after burning my hand the heatsink was that hot i could actually smell t…
... /> [CODE]
Toastrack 128K 935mA
Grey +2 970mA
+2 with tape running ... regulator -220mA (400mA)
- with Lower RAM module -105mA (295mA)
(active) +335mA
Interface 2: +5mA
Kempston interface: +15mA ...
