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Eu acabei não mostrando ligado no hotbit pq não tinha visto como ligar a fonte. Mas a propaganda de que o Tang roda em qqr msx foi feita :) ... manda aqui o link para quem estiver interessado em adquirir.

@@abaffa pode passar o meu contato no grupo do MSX FPGA, eu estou lá. Forte Abraço, meu amigo!

Yep, I had to compile vgmplay to adjust the address and timings. The code is well commented and easy to adjust

@@abaffa thanks very much!

Na época, os computadores eram ligados aos terminais. Os terminais eram um monitor com teclado e sem CPU. A réplica TB funciona assim. Desde o início era possível usar conectado ao terminal mas o basic foi o início de tudo.

No original, podemos colocar uma rom que faz um boot em disco ou carrega o basic. Na réplica, ele vem com roms (já no emulador) para boot em imagens de disco de 8", 5.25", HD e alguns formatos como Cromemco, Tarbell, CP/M, Mits Programming System II além do baisc 4k e 16k. A seleção da rom pode ser feita pelo input das chaves e acionada pela chave "aux"

ah sim... as imagens podem ficar em um cartão SD. o nome do arquivo segue um padrao com prefixo e numeração, assim, conseguimos definir o formato e qual disco queremos dar boot. Isso também são parametros que passamos no boot com aux, se não me engano (falando de cabeça) endereços a0-a5 definem a rom, a6-a8 tipo de disco e a9-a12 o número da imagem.

Vi um vídeo como o Altair BASIC era carregado e operado via Teletype.

@@andreranulfo-dev8607 em um altair sem roms (ou sem usá-las) era necessário carregar na memória o programa manualmente ou um pequeno "boot loader" que era um programa que aponta para um dispositivo e carrega um novo programa através dele. Nesse vídeo (eu tb já assisti ruclips.net/video/qv5b1Xowxdk/видео.html), eles demonstram como foi feito quando o Paul Allan apresentou o Basic 4k a Mits. Carrega-se um pequeno bootloader (blog.kagu-tsuchi.com/articles/altair_bootloader.html) para apontar para o "serial I/O" e receber os dados da fita.

Hi WolfKenneth, My intention is to have as many interchangeable boards as possible, but using the original ROMs is not always possible. I decided to create a standalone NES but it connects to the backplane BUS (I need to do some tests but I think it's possible to load roms direcly from the Apple1 connected to it). Apple1, Apple2 and Atari uses the same CPU board (although I needed to create new versions that are compatible with all projects). For Apple2 I also had to create a video and I/O boards - The Mem/Rom board (I called Addr/Dec/Ram/Rom) is compatible to Apple1. When I created the apple 1 I used the Minimal Terminal board (I had from other projects) for keyboard and video. It uses the serial I/O board that is compatible to woz monitor rom. The clock board from apple2 can be used in apple1 but it's not necessary. The CPU board has a socket to attach an active oscillator and also has the atari card (if you use the apple-atari setup). For Atari is only necessary CPU and Atari card but I managed a way to run Atari and Apple1 together. It's possible to load Atari games into memory from the SD card and run them "natively" on apple1.

It is quite possible to add Atari board compatibility to the Apple2 and run Atari roms directly from it. But it is necessary to make some small adjustments to the project just like I did in apple1. In practice, apple1 is just a text terminal with the CPU 6502 while apple2 has several hardware addressing definitions and this tightens things up to make the boards more interchangeable.

eu tb... joguei muito! Eu acabei não colocando o timer que é usado no paddle e fiquei sem suporte pra ele... mas tb eu nunca tive um naquela época xD... Havia lido sobre esse conversor de joystick atari e implementei. uma pena que poucos jogos dão suporte...

enfim... estou vendo de mexer na placa de I/O e tb colocar uma porta de joystick "dip" para dar suporte ao paddle tb...

Opa, foi um Cristal 6.500MHZ HC49U - Perfil Alto

@@abaffa obrigado pela resposta. Vou tentar montar um ZX80 com o layout do Grant Searle. Um amigo me fez a placa dupla face, mas sem furos metalizados. Os cis eu já consegui e eu gravei a eprom de 4k. Preciso pensar como fazer o teclado de membrana.

I'm using original ICs. Basically I'm loading the game to RAM using the Woz monitor and paging the memory via hardware. hackaday.io/project/186081-baffatari-2600 and baffa-6502.baffasoft.com.br/hardware.php

Telnet baffa.zapto.org:2323 ou bbs.baffasoft.com.br

U're right... The clock was wrong when I recorded that video 😅

Hi Matthew... The zonX is a simple project. It's necessary just some ICs to address the calls and an AY8910/AY8912 as a programmable sound generator. I designed a pcb but never ordered 'cos I've been working on other projects... this links presents some boards I designed for zx81 but never produced... zx81.baffasoft.com.br/whatsnew.php ... my other projects are at hackaday.io/projects/hacker/1168159

@@abaffa I'm a very simple chap. My dreams get bigger than my ability! But I know enough to observe what you have done on that website is to me quite an extraordinary accomplishment. I think that's great and shows a person who has managed to dive into some really interesting aspects of the computer, knowing how it works etc. More importantly, however, I do appreciate your kind message and contact. You remind me how the ZX community was by and large in the 80's in the circle I experienced anyway and I think there's something in that for why these machines have remained as special as they have. Be assured of much thanks & gratitude for taking the time to reply and point me in the right direction with the leads you mentioned. You made my day!

@@matthewmillaisgray I learned to program on a ZX81 and then I an apple II+ ... after that a PC XT and all other x86s.... I mean.. I know how special it was to be able to operate and program a computer in the 80's .... did u have a modem? have u accessed terminals/BBS those days? everything was new, magical and naive... the community was excited and exciting... in the last 20 years the internet and the use of computers simplified and cooled all the excitement that there was in the 80's... and of course... using computers was still experimental and it was necessary to have greater knowledge about how it worked and also to be more hands-on to assemble them and make them work... for the last 10 years I've been following the rise of "retrocomputing" and the nostalgia behind everything that was and was possible... it's like we're revisiting computing history to remember what cool it was and use that knowledge to create a new future :)

mesma época... pong foi o primeiro "video game" caseiro e o altair foi o primeiro computador

Exatamente... para usar a rom do MSX-2+ ... baffa-2.baffasoft.com.br/images/new/baffa_x2_rtc.png

mais foi uma saga feia. Se essa fosse falsa tb eu ia encostar por um tempo. ia ser a oitava....

U’re right. But this one I made myself and has my name on the board. More info at hackaday.io/project/190004-baffanes

ruclips.net/video/ITUP7RFcHEo/видео.html