Sharp MZ-2800 Améliorations
Summary
Amongst the machines I have renovated is a Sharp MZ-2800, the dual CPU successor to the MZ-2500 or Super-MZ. The machine was a synergy of the old Z80 world and the dawning of the new 16bit
world based on the 80286, the heart of the IBM PC AT and the basis of most modern computers.
The machine kept full compatibility with the MZ-2500 by inclusion of the Z80 and all its associated hardware. It also added an 80286, the primary processor of the machine along with more memory (768KB), more Graphics RAM (512KB) and an abundance of expansion options, allowing both MZ-2500 expansion cards and new MZ-2800 16bit expansion cards to be sited in the same casing. It was, in effect, a Super Super MZ!
Unfortunately the machine gave up some of the MZ-2500 features, namely compatibility with the MZ-2000 and MZ-80B but this was a small price to pay for the power and performance on offer.
As with the MZ-2500, I decided not to pursue the tranZPUter upgrade path for this machine as there is basically no space, other than the expansion bay, to add functionality. The tranZPUter would need to be redesigned as an add in card and may not be able to provide all the same features it provides to an MZ-80A/MZ-700/MZ-2000. I thus stuck with renovating it and discovering the wonders it provided.
The machine kept full compatibility with the MZ-2500 by inclusion of the Z80 and all its associated hardware. It also added an 80286, the primary processor of the machine along with more memory (768KB), more Graphics RAM (512KB) and an abundance of expansion options, allowing both MZ-2500 expansion cards and new MZ-2800 16bit expansion cards to be sited in the same casing. It was, in effect, a Super Super MZ!
Unfortunately the machine gave up some of the MZ-2500 features, namely compatibility with the MZ-2000 and MZ-80B but this was a small price to pay for the power and performance on offer.
As with the MZ-2500, I decided not to pursue the tranZPUter upgrade path for this machine as there is basically no space, other than the expansion bay, to add functionality. The tranZPUter would need to be redesigned as an add in card and may not be able to provide all the same features it provides to an MZ-80A/MZ-700/MZ-2000. I thus stuck with renovating it and discovering the wonders it provided.
Renovation Begins
The photos below are taken from the actual machine during rebuild and are adhoc at the moment. They will in time be formed into a comprehensive guide, please bear with me.
Remerciements
Lorsque j'ai utilise ou base un composant sur la conception d'un tiers, j'ai inclus l'avis de copyright de l'auteur original dans les en-tetes ou rendu credit en consequence. Tous les logiciels tiers, a ma connaissance et selon mes recherches, sont open source et librement utilisables. Si un composant s'avere soumis a des restrictions de licence, il sera retire de ce depot et un lien/configuration appropriee sera fourni.
Licences
Cette conception, materiel et logiciel, est sous licence GNU Public Licence v3.
La Licence Publique Generale GNU v3
Les fichiers source et binaires de ce projet marques comme GPL v3 sont des logiciels libres : vous pouvez les redistribuer et/ou les modifier selon les termes de la Licence Publique Generale GNU telle que publiee par la Free Software Foundation, soit la version 3 de la Licence, soit (a votre choix) toute version ulterieure.
Les fichiers source sont distribues dans l'espoir qu'ils seront utiles, mais SANS AUCUNE GARANTIE ; sans meme la garantie implicite de QUALITE MARCHANDE ou d'ADEQUATION A UN USAGE PARTICULIER. Voir la Licence Publique Generale GNU pour plus de details.
Vous devriez avoir recu une copie de la Licence Publique Generale GNU avec ce programme. Si ce n'est pas le cas, voir http://www.gnu.org/licenses/.
Les fichiers source sont distribues dans l'espoir qu'ils seront utiles, mais SANS AUCUNE GARANTIE ; sans meme la garantie implicite de QUALITE MARCHANDE ou d'ADEQUATION A UN USAGE PARTICULIER. Voir la Licence Publique Generale GNU pour plus de details.
Vous devriez avoir recu une copie de la Licence Publique Generale GNU avec ce programme. Si ce n'est pas le cas, voir http://www.gnu.org/licenses/.