This version will firstly focus on make an diy version for sdmmc card that give you the ability to. Internally these are treated as 8 halfrows of 5 keys. First produced for investronica of spain, later released in uk. Games and entertainment software for the zx spectrum.
When the spectrum 128 reached britain in february 1986, sinclair research was already in deep financial trouble following the c5 fiasco. The zx spectrum 128 was jointly developed by sinclair research and investronica under the codename derby. Sadly, try as i might, i cant find a specmate for sale anywhere update. All rom versions and hdf images for them with 3 prgs. World of spectrum documentation zx spectrum 128 manual. Zx spectrum clone built around an earler version of the ula design. Zx spectrum design in a digilent spartan 3 starter board. Im trying to make a zx spectrum interface board as an exercise in. The keyboard is read by reading from port 0xfe however the upper eight address lines play a role in determining which half row is to be read each row is directly connected to one of the upper eight address lines a 8 to a 15, and each key of a row is. Help us while reliving hours of fun playing those retro. Im not proposing to generate a real pal signal for this project at least not initially but instead to generate tv rgb and sync signals. This is a self build computer kit that i have wanted for a long time.
G this was a very exciting project for me to work on. Obviously from bidding portal and obviously i wasnt sure if it is in a working state. Lists of the components omitted for either model are included. For smaller parts ram chips and the like we have no charge, and for the major parts except the ula we charge. Also, please support our work by spreading info about it. Datacorder pcb dv1 dv2 dv3 dv4 dv5 dv6 dv7 d3 d2 d1. The zx spectrum keyboard consists of 40 keys arranged as 4 rows of 10.
C41, c42, c43, c44, c45, c46, c47 r77, r78, r79, r80, r81, r82, r83, r84, r85, r86 ic16, ic17, ic18, ic19, ic20 xl2 internal disc drive header led header include. A blog about all things technology, but mostly computer software and. A page about program transfers between an emulator and a spectrum or audio cassette. This version include divmmc and keypston joystick port on board.
Based on chris smiths excellent book the zx spectrum ula. If you want to get retro gear or hardware modules, please visit our shop. Zx spectrum 128k replica with real z80 cpu and almost all logic in cpld altera epm7128stc100. The sinclair zx spectrum computer has always been really interesting to meour first family computer was a timex sinclair.
The first is a modified version of the zx spectrum 128 editor. The zx spectrum 128 came with an 8bit cpu with a speed of 3. I started by placing all the components on a schematic in kicad eda software. Found one made by ian worsley, and thought why not make a poster, while im at it. Video fixes and video cables get brand new zx spectrum. Issue 5 layout only issue 6a schematics and layout. Here youll find schematic and layout information for various models of the zx spectrum. The keypad is connected by its own coiled cable which fits into the socket on the front of the computer. The zx spectrum 1648k models have ram memory divided in 2 banks. Once more sinclair revolutionized the microcomputer industry with new standards. Zx spectrum emulator for windows 10, windows 8, windows 7. You can use 128 basic to type in any program which was originally written for the spectrum 128. The zx spectrum emulator for microsoft windows 910. Issue 1 schematics and layout pdf issue 2 schematics and layout.
We have all the special parts needed in stock ulas, cpus, ram etc. Nov 30, 2019 the superfo harlequin 128k revision 2d kit a clone of the sinclar zx spectrum 128k. Thus the enormous amount of games and other software for these early spectrums could still be used on the spectrum 128. Sign up schematic of a 8bit computer, clone of sinclair zx spectrum. Pcb designed to fit into original zx spectrum 48k rubber keys case. Sinclair zx spectrum 128 computer computing history. The schematics have been redrawn using the gschem schematic editor from the open source geda project. How to design a microcomputer which documents reverse engineering the ferranti ula within the. The screen can be displayed from ram5 default or ram7. It can be used as a virtual tape unit in conjunction with a real zx spectrum.
Zxcard diy sdmmc interface there have been many project to create a storage interface for zx spectrum like smart card, divmmc, zxmmc, divide. Superfo harlequin 128k kit computer retrocomputers. The world of spectrum faq, maintained by arjun nair. The spanish version was released first in september 1985, with the uk version following in january 1986. This is mainly because they are quite expensive to buy these days being one of the less common sinclair zx spectrum machines. Zx spectrum timex to 128k upgrade zx spectrum 48k to zx spectrum 128k compatibility. Im trying to make a zx spectrum interface board as an exercise in electronics and embedded programming, and need my spectrum s schematics. The superfo harlequin 128k revision 2d kit a clone of the sinclar zx spectrum 128k. Instead, you type each word in full, letter by letter. The name of the bi am zxspectrum 4864 suggests that it comes with 64 kb ram.
Cost reduced versions of the 128 architecture with some incompatibilities. A block diagram of the complete zx spectrum microcomputer is given below, click on the picture for a bigger version. This version will firstly focus on make an diy version for sdmmc card that give you the ability to play all you spectrum game selected from a menu. Not having any 2764 eproms to hand, i used a 27c128, which is pin. The zx spectrum 128 was launched in 1986 by sinclair and came with 128k for. The 128 is the first real evolution of the old spectrum. The zx spectrum display is naturally pal compatible and this is confirmed by one scanline taking 64us at a line frequency of 15625 hz, which is in line with the pal standard. Instead of the composite video signal they have a dangerous 12v on pin 1 that will seriously damage your tv or monitor. The lil old zx spectrum 48k service manual section 1.
The internet archive software library is a large collection of viewable and executable software titles, ranging from commercially released products to public domain and hobbyist programs. It is valid for all build standards, fitted with either 16k or 48k bytes of dynamic ram memory. It is implemented using 64k x 1 bit drams with the spectrum design allowing the use of halffunctional chips, and mostly unproblematic. Sinclair spectrum after the success of his two previous computers, the zx80 and particularly the zx81, in april 1982 sir clive sinclair presents the zxspectrum. Some software test this feature, but it is not recomended as some upgrades may not be correctly recognized. The second is an exact copy of the original zx spectrum basic but has trdos traps in place of the character set 0x3c000x3fff is filled with push af. Zxtunes it is worlds biggest zx spectrum 8bit music collection news musicians software harware interviews podcasts stats forum faq music. Flash is accessed over a separate 8bit interface and mapped in to the bottom 16 kb of address space. Tool to assist with maintenance of your zx spectrum tapes and zx spectrum emulator tape files. This shows the working screen of the first program from the horizons demo tape spanish version, the one that teaches the hardware of the spectrum. The harlequin is a clone of the zx spectrum using standard ttl parts.
Although functionally identical, detailed circuit changes have been introduced to improve reliability and to assist with manufacture. The original technical specification for the zx spectrum 128k 1985 the zx spectrum 128k technical manual. This computer is a clone of the zx spectrum 128 computer a computer that isnt currently in my collection. Tynemouth software llp old computers, new computers, bespoke web design and software development, computer repairs, it and media services uk. I tested above 16bit ide interface with transcends 128mb ideflash drive 128mdom40v.
In 128 basic none of these special key entries apply. Using the jsmess emulator, users can boot up an emulation of the given title and use it in their browser. Sinclair zx spectrum 128 service manual pdf download. This is a pcb for zx nuvo 128, a new version of popular zx spectrum clone kit.
Building a harlequin zx spectrum clone ive been working on a lot of zx spectrum and zx spectrum related items recently, and. Zx spectrum pcb schematics and layout spectrum for everyone. The spectrum 128 has an optional extra extension keypad which provides extra facilities when editing programs and works as a games controller and calculator. Nov 26, 2016 ive been working on a lot of zx spectrum and zx spectrum related items recently, and have now built a zx spectrum clone. Rom 0 uk, spanish and french, an incomplete disassembly of the spanish spectrum 128 rom 0 and. A call to the test routine in rom1 is replaced with code to reset the timex ula. It was made just before amstrad bought the right to use the sinclair name in computer products.
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