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New platform game: Sid SpannersHi all, here is my Christmas present. A new platform game (well, more of a mini-game really). [url=http://java.cms.livjm.ac.uk/homepage/staff/cmspc…
... . Memory was in the end, not a problem, since after I ... memory (the first bit of RAM straight after the attribute file ... . It's not as fast as having them in upper memory, but ... at this time, I'm not planning on altering it anymore ... -
binutils questionSince there's a few people using binutils these days I thought I'd give it a go and see whether it solves my hunt for a replacement assembler/librari…
... .
[I]This is not a Z80 binutils bug.[/I ... the lower 16K RAM, the screen area, and the upper 32. I ... -
Timex Floppy Disk Drive emulation discussionI feel embarrassed for starting this topic because I can't contribute with actual code, but this is a new attempt to simplify and present what the Ti…
... a TT3000, the TI is not needed.
... RAM but the ROM is paged when a syntax error is detected ... compatible with many but not all Spectrum models.[/ ... commercially released software has not been preserved or has ... would be a problem or not.[/QUOTE]
Dead Spectrum+Hi! Any suggestions where to start finding what's broken: Spectrum+ with issue 6A motherboard and nothing on TV. Top row of the upper memory chips g…
... +5V at 7805 output. If not present, isolate the output pin ... short circuit on low bank RAM. TR5 (ZTX213) rarely becomes damaged ... (although with 16K RAM if upper memory was defective). If not, one or ... more chips in the contended bank (low 16K RAM ...writing an emulator-newbie needs helpHi, this is my first post here. I decided to write a minimalistic emulator of ZX Spectrum-no emulation of advanced peripherals, no emulation of sound…
... as ROM and upper 48K as RAM works or not? If it's ...writing an emulator-newbie needs helpHi, this is my first post here. I decided to write a minimalistic emulator of ZX Spectrum-no emulation of advanced peripherals, no emulation of sound…
... can be read from but not written to. I thought I ... as ROM and upper 48K as RAM works or not? If it's ...writing an emulator-newbie needs helpHi, this is my first post here. I decided to write a minimalistic emulator of ZX Spectrum-no emulation of advanced peripherals, no emulation of sound…
... as ROM and upper 48K as RAM works or not? If it's ... the address is ROM or RAM. This penalizes all the writes ... easy implementation of +3 "all RAM" modes and the emulation of ... ROM by 8k ROM + 8k RAM).What paging scheme is the "standard" for 128K models?Sinclair implemented an arrangement so that even numbered pages are non-contended, and odd numbered pages are contended (quoting from memory, haven't…
... array" because it's not actually a Ferranti ULA) updates ...
The RAM is being accessed at all times! Not just when ... ugly shape. It's not that way actually, it ... at the RAM showed these pulses at the upper trace. The ... pulse at the RAM side is not a copy from ...Repairing a faulty 48K issue 2.I am investigating one of a pair of non-working issue 2 48K Spectrums that have been sitting in a cupboard untouched for quite a few years. I haven…
... of the lower 16K of RAM.
It ... reports problems. It's not unusual for bits of the ... an area of the upper 32K of RAM for a while ... is updating the display (and not usually otherwise) there is ... when the surrounding area is not white) pixels in the ...Repairing a faulty 48K issue 2.I am investigating one of a pair of non-working issue 2 48K Spectrums that have been sitting in a cupboard untouched for quite a few years. I haven…
... CPU to refresh the lower RAM when the ULA isn't ... the problem happened, at least not at this hour anyway, but ... the test over the upper part of lower RAM), so the problem ...Interface 2 custom cartridges (fruitcake.plus.com)I guess most of you are familiar with these interesting pages: [url]http://www.fruitcake.plus.com[/url] I have several questions regarding this: 1…
... supported
3. Sure, but not in a totally transparent way ... non-transparent modes use the upper 64 bytes of ROM, so ... will work fine).
4. Not really, the flashing of the ... that is more than 48k RAM in total?
4. Is ...Three faulty machines - help!I have three Spectrums and all of them have suddenly collapsed and I can?t figure out what?s wrong. New here.... I own three Speccies but all of a …
... on pins on the lower RAM chips (8x 4116, lower ... 12V and -5V there. If not: power off [I]immediately[/I ... back in place! These RAM chips are very sensitive to ... a clock signal or not). When you have a ... fixed -> if not: repeat. If upper 32K RAM is socketed, you ...Three faulty machines - help!I have three Spectrums and all of them have suddenly collapsed and I can?t figure out what?s wrong. New here.... I own three Speccies but all of a …
... on pins on the lower RAM chips (8x 4116, lower ... 12V and -5V there. If not: power off [I]immediately[/I ... back in place! These RAM chips are very sensitive to ... a clock signal or not). When you have a ... fixed -> if not: repeat. If upper 32K RAM is socketed, you ...MB02 Ramdrive issues - can anyone help?I've upgraded an MB02 to 512KB memory. I'm trying to create a ramdrive to check if the 512KB is functioning correctly. First I'm setting up a ramdri…
I think you may not use ff17.
... the RAM Drive.
If no virtual drive is detected, ... RAM Drive was installed for the
first time and was not ... that you do
not have to use ff17).
not working correctly.
Greets ...3D Deathchase on the Commodore 643D Deathchase has been ported to the C64, at least according to Micro-Mart. According to this week's MM, the port is called Hell Racer, and here's a …
... , came about from not using an external colour RAM like the C64 ... assigned to screen and colour RAM at start up (these can ... to 2MHz mode in the upper and lower borders to get ...AY-interface for ZX81 (at last ;) )Hi, it exists finally ;) - compatible with the most standard one - ZonX. [url]http://www.sellmyretro.com/offer/details/Brand_New_Sinclair_ZX81_MrX_A…
... the RAM to 32K and not 64K like some older ZX81 RAM expansion ... amount of useful RAM a zeddy can carry. The upper 16K is ...FATware with poke supportI've been trying some divIDE firmwares (with emulators) and discussing some problems in other forums. So I post some results here, because most firmw…
... POKE manager not enable. FATWARE autodetect if in DIVIDE ram exist any ... as normal fatware, if code detected, then run new code.
ram memory in any time. But ... one time to mapram mode (not to EEPROM).I/O port adress map of Spectrum and interfacesI'm looking for an adress map of all the used and unused I/O ports for the ZX-Spectrum. Many years ago I designed an I/O board for the Spectrum that…
... .
Problem was: I did not know where to get one ... I would connect the extra RAM directly on the Spectrum bus ... to use for bankswitching the upper 32K.
That would give ... theoretical 256 banks of 32K RAM = 8192K or 8M total.
Replacing Upper RAM in 48KHi Folks Well, my fun continues :) After sorting the display issues with this machine I found I couldn't load software meant for 48K machines. Havin…
... the Harlequin boards if I not mistaken?[/QUOTE]
As ... you can disconnect the upper 32K of RAM in the PCB Harlequin ... some logic to support video RAM in page 7 as well ...Schematic of MULTIFACE 128Exist schematic of Multiface 128 ? I find on WOS only pictures of PCB layers. I mix both layers for possibility make schematic from picture, but it's…
... line of eprom 8kB not connect. Now is connect ... br /> I fix some detected bugs and fixed wiring, ... if MF128 memory is not connect. If MF128 memory ... + 8192-16383 = 8kB multiface ram).
- any writing to ... register (D6-D0 are not modified, here is transparent ...SPECTRA New from Paul FarrowLooks good! Read about it [URL="http://www.fruitcake.plus.com/Sinclair/Spectrum/Spectra/SpectraInterface.htm"]here[/URL]
... based on whether ULAplus is detected or not. If you don't ... the HAM256 viewer I'm not aware of any ULAplus software ... on a CPLD with external RAM or an FPGA and you ...SPECTRA New from Paul FarrowLooks good! Read about it [URL="http://www.fruitcake.plus.com/Sinclair/Spectrum/Spectra/SpectraInterface.htm"]here[/URL]
... =mcleod_ideafix;646700]- It is not compatible with the ULAPlus specification ... that uses more main RAM than the standard screen ... a CPLD with external RAM or an FPGA and ... ) then SPECTRA will not respond to the Kempston ... bother to set the upper address byte and so ...Spectrum in black TS1500 case with grey "Sinclair ZX Spectrum" labelAt the Spectrum30 event yesterday, someone had brought a Spectrum like object with an unusual case and I never did find out whose it was or where it …
... really good reason not to release a 16k RAM version lol.[/QUOTE ... a DCK file where the upper 32K of the HOME bank ...Spectrum in black TS1500 case with grey "Sinclair ZX Spectrum" labelAt the Spectrum30 event yesterday, someone had brought a Spectrum like object with an unusual case and I never did find out whose it was or where it …
... a DCK file where the upper 32K of the HOME bank ... mentions the former has 2 RAM chips while the latter is ... at Timex. This issue is not online but I do have ...Spectrum in black TS1500 case with grey "Sinclair ZX Spectrum" labelAt the Spectrum30 event yesterday, someone had brought a Spectrum like object with an unusual case and I never did find out whose it was or where it …
... Anonymous;652239]And it's not a repair?[/QUOTE]
... was supposed to mean 48k RAM; the question was why ... 2068 can run with 16k RAM or not -- are you certain ... new things placed in RAM when compared to the ... />
I removed the upper 32K of a TC2068 and ...Query about memorySo I know this has been asked a lot and I beg your brief indulgence. I have scanned through a lot of old threads already but I'm trying to improve m…
It is not always memory, address decoder chips ... soldered in later models, so not so easy to replace.
upper 32 RAM, making repairs and upgrades ... probably any additional cost was not acceptable.My 48K Speccy has died.Hi fellow WoSer's! Wondering if you could help me with my rubber key 48k Spectrum, which died on me this afternoon. It is one I prevoiusly fixed up j…
If the upper 32K RAM chips are socketed, try removing ... I gather that's probably not the problem, but it doesn ...Difference between brands of 4164 chips?I have gotten my hands on a batch of several brands of 4164 chips. Examples are NEC D4164C-3 and Mitsubishi M5K4164ANP-15. Anyone knows if any type …
... operation is achieved.
Not sure if this is related ... RAM) substitute.
They seem fine when I use them as upper ...The Disciple clone... doable?Hi. As a spectrum user in the 80's this was the dream interface all-in-one for me. I have a 48k+ and planning on get a 128K toast-rack later. Anyway…
... snapshots, previous ones were not. It can help you ... (or tape, initially) into RAM. Actually, the DISCiPLE ROM ... in length, but the upper (or sometimes lower) half ... of the DISCiPLE's RAM after loading of GDOS... ... on bootup, and if not, switches to the other ...
