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QL microdrive units (x2)Found two old microdrive units I ripped out of a QL many moons ago. Just the bare units, no fancy cases etc. I have NO idea if they're any use for …
Found two old microdrive units I ripped out of ... -
Microdrive usageAnyone here know about microdrive files? Had a few carts in, all have stuff on, heres an example cat 1 with the error message i get for every single …
Anyone here know about microdrive files? Had a few carts ... -
Loads of Microdrive cartridges on Ebay plus Vortex RAMI?ll be selling three bundles of eight Microdrive cases with four, used cartridges each, means 32 cartridges per bundle, here?s one of them [img]http…
... selling three bundles of eight Microdrive cases with four, used cartridges ... -
Help for beginner with z80Hi chaps, I'm reasonably new with z80, but had a fair amount of experience with 68000, so decided to give a few things a go. One little thing I'm t…
... , and intend to lsa left shift those 8 bytes and test ... can't pass in a register to the BIT commend, e ... -
LARGE BATCH OF 144 SINCLAIR QL/ZX SPECTRUM MICRODRIVE CARTRIDGES RESPONGED!!!http://www.ebay.co.uk/itm/LARGE-BATCH-OF-144-SINCLAIR-QL-ZX-SPECTRUM-MICRODRIVE-CARTRIDGES-RESPONGED-/171855953414?pt=LH_DefaultDomain_3&hash=item280…
... -144-SINCLAIR-QL-ZX-SPECTRUM-MICRODRIVE-CARTRIDGES-RESPONGED-/171855953414?pt=LH_DefaultDomain_3 ... -
Non working IF 1 and Microdrive for museum exhibition display also working SpectrumAs said above, I am looking for an Interface 1 and a Microdrive unit (plus one microdrive) for a exhibition display. it need not work but should be i…
... Interface 1 and a Microdrive unit (plus one microdrive) for a exhibition ... be in reasonable condition (ie microdrive shouldn't look like its ... -
The I register and IM 1Hi al! I've been doing some coding, replacing the BASIC ROM with my own code and upon examination of a few 16Kb cartridges, all the ones I've look…
... to say about the I register, apart from its use in ... -
R registerI'm cross-posting this as a spin-off of a [url="http://www.worldofspectrum.org/forums/discussion/52748/zx-spectrum-cartridges/p2"]thread in "Hardware…
... & correctness of the R register behaviour.
From ... br /> [quote]Memory Refresh (R) Register.
The Z80 ... of this 8-bit register are automatically incremented after ... instruction fetch. Hence R register can be considered a simple ... -
Connecting a Microdrive to modern hardwareHas anyone looked into connecting a Microdrive to an Arduino or Raspberry Pi?
Has anyone looked into connecting a Microdrive to an Arduino or Raspberry Pi? -
Tir Na Nog - Microdrive save/restore?The docs for tir na nog e.g. [url="http://www.worldofspectrum.org/pub/sinclair/games-info/t/TirNaNog.pdf"]worldofspectrum.org/pub/sinclair/games-info…
... /t/TirNaNog.pdf[/url] mention microdrive save/restore.
I ... got my copy loaded via microdrive using the MinnaMicroZ80 tool which ... /> Anyone got saves working via microdrive? -
CAPS-SHIFT KeyCodeIs there a standard Keycode for CAPS-SHIFT Key ? Looking at the ROM documentation in the Main key table KEYTABLE_A, there is no Entry for CAPS_SHI…
... a standard Keycode for CAPS-SHIFT Key ?
Looking ... .
NOTES:
SYMBOL-SHIFT is mapped to control code ... A - Character set", so CAPS-SHIFT could be assigned 15 = 0x0F ... a defacto standard for CAPS-SHIFT keycode ?
P. ... -
Print (to screen) avalue held in a register pairHi guys, looking for a routine that will print any value from 0 to 65535 to the current position on the screen. I once heard that there was a PRIN…
... a value held in theBC register pair, to the current screen ... -
ZX Interface 1 + ZX Microdrive + ZX PrinterAll with early original shipping box: http://www.ebay.co.uk/itm/Sinclair-ZX-Interface-1-in-original-postage-box-/172508324401?hash=item282a4c2231:…
... .co.uk/itm/Sinclair-ZX-Microdrive-in-original-postage-box-/172508330228 ... -
Getting a +3 working again (keyboard & tape socket issues)So, as part of my Spectrum restoration project I will also try to tackle the problem child among my fleet, the +3. PROBLEM ONE: Ever since I firs…
... and +2B, none of them register "down" on the +3 - which ... keys which are all Caps Shift plus a non-working key ... -
A sped up pixel-shift routine for 1-byte–wide spritesHere’s an optimized (for speed) real-time sprite shifting routine for sprites that are one byte wide. It uses no memory variables for storage of inte…
... ,a ;no? Make B our shift counter
ex af,af ...
msl_shift
rr c ;shift through Carry
rra
"ZX80 Brain" RPN CalculatorIt is at times like [url=https://www.worldofspectrum.org/forums/discussion/54176/depression]when threads such as this are posted[/url] that I get the…
... have used POKE 23606 to shift them vertically, but I needed ... in tape, +3 disc and microdrive formats, all with the LOAD ...The HL Register Pair Naming. An Observation.This isn’t really a question or a tip. Just an observation about the naming convention of the registers in the Z80 CPU. It seems that every register …
... CPU. It seems that every register other than the HL pair ... [/b]—[b]F[/b]lag register
[b]I[/b]—[b ... ]Y—[b]I[/b]ndex register [b]X[/b]/[b]Y ... /> Then come the good-old register pairs:
[b]SP ...SINCLAIR ZX MICRODRIVE: NEW, unused!!!http://www.ebay.co.uk/itm/SINCLAIR-ZX-MICRODRIVE-NEW-unused-/172623503401 Perfect box, complete with plastic protection inside the internal metal …
http://www.ebay.co.uk/itm/SINCLAIR-ZX-MICRODRIVE-NEW-unused-/172623503401
Perfect box, complete with plastic protection inside the internal metal plate cover.
Have a nice bid ;)Fastest way of reading from EAR portI'm trying to work out the fastest way of reading data from the EAR port and assembling the bits into a byte. I came up with this code: IN A, (C) ; …
...
RLL D ; shift carry into D register, 8 cycles
... repeat ...Sinclair QL Preservation: how to dump a MicrodriveHi Guys. Just want to let you know that I'm making some videos on my YouTube channel that explain how the Sinclair Microdrive process works. If…
... that explain how the Sinclair Microdrive process works.
If ...ZX Microdrive .mdr file "Cruncher"Hello all. Last year I've been in contact with Marcos Cruz and he gave me the idea to write a [b].mdr[/b] manipulator since it is a well known for…
A Neat Redefine Keys RoutinePreviously, I’ve only shared this routine with a couple of people via PM, but I’ve now decided to make it public. I optimized it for size, so it uses…
... ; otherwise, use a 16-bit register
;pair, such as HL ... , check if it is SYMBOL SHIFT
ld de,enter ; ... cp 39 ;is it CAPS SHIFT?
jr nz,as_is_key ;if ... /> s_shf defm "S.SHIFT"
c_shf defm "C.SHIFT"
dummy_key ...Reviving a Microdrive (and its notoriously fragile media)eBay has been getting a [i]lot[/i] of business out of me lately, which brings me to this... Context: some years ago I bought a job lot of Spectrum…
... in the package was a microdrive, the connector cable, the standard ... the bits together - and the microdrive motor burst into action for ... the genuine sound of the microdrive looking for something, and ... to watch seeing as a microdrive cartridge is essentially an ...The I register pointing to $40–$7f causes ULA snow and a crash. Or does it?I have heard it from numerous sources, including a few members of this forum, that 128K/+2 machines crash if the I register points to a range of $40–…
... machines crash if the I register points to a range of ...SINCLAIR QL ULTRA JOBLOT: 308 Microdrive Tapes, for the ZX Spectrum too!!!https://www.ebay.co.uk/itm/SINCLAIR-QL-ULTRA-JOBLOT-308-Microdrive-Tapes-for-the-ZX-Spectrum-too/173130060764 Have a nice bid ;)
https://www.ebay.co.uk/itm/SINCLAIR-QL-ULTRA-JOBLOT-308-Microdrive-Tapes-for-the-ZX-Spectrum-too/173130060764
Have a nice bid ;)Yet another Microdrive emulator...Hi there, I just got a prototype of a hardware Microdrive emulator working. I opened a discussion about it over on the Spectrum Computing forum. I…
... a prototype of a hardware Microdrive emulator working. I opened a ...WTB: ZX Microdrive unit (working)Looking for a, preferably working, ZX Microdrive. If you have a ZX Interface and cable, that would be nice, too.
Looking for a, preferably working, ZX Microdrive. If you have a ZX Interface and cable, that would be nice, too.Random-Access to Microdrive FileI am working on a BASIC program to backup a microdrive text-file to standard tape array-file. To backup a text-file from one microdrive to a secon…
... BASIC program to backup a microdrive text-file to standard tape ... text-file from one microdrive to a second microdrive, once we OPEN ... simply pulls the text from microdrive one character a time using ... 512 characters from an OPEN# microdrive stream area to a normal ...Looking for "25 Programs for the Sinclair ZX Microdrive" reprint licence.Hello everybody! I'm Salvatore Lasorella, president of Apulia Retrocomputing (www.apuliaretrocomputing.it), a little cultural association we found…
... Programs for the Sinclair ZX Microdrive: Multi-User Games for the ...
