With the help of a friend, I was able to port and assemble extended wozmon to the Cactus. A ROM monitor is something Iâve needed for quite awhile, so itâs good to finally have that capability. It includes some serial transfer routines which will cut down on development time.
Now that I have cc65 installed, I should try writing some C for the Cactus.
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Here some news about my NES ball-breaker game. I have redesigned the dungeon level. Although NESMaker is a nice tool, it wasn't the best option for my style of game. I decided to go for cc65, a C compiler for the NES. I will have some gameplay to show very soon.
O amigo FĂĄbio da Elicar Auto ElĂŠtrica perguntou:
Eu vou comprar uma pinça amperimĂŠtrica, mas nĂŁo recebi ainda meu Hantek 6254Be e meu Raven Scanner 3 nĂŁo tem ainda o upgrade para Scope. Se eu comprar uma pinça para osciloscĂłpio, com uma saĂda BNC e um adaptador BNC para pino banana duplo, consigo usar?
Resumindo: Se as pinças geram tensĂŁo para ser lida, ĂŠ possĂvel ver isto em umâŚ
Teste corrente e rotação da bomba combustĂvel com pinça CC65 e Raven Scope no Uno
Teste corrente e rotação da bomba combustĂvel com pinça CC65 e Raven Scope no Uno
Teste de bomba de combustĂvel com osciloscĂłpio, utilizando a pinça amperimĂŠtrica CC65 da Hantek e o osciloscĂłpio Raven Scope 3.
Foram considerados os valores de corrente e rotação por comparação com as informaçþes do grande Abel Klering, que fornece treinamentos muito bons para oficinas.Apesar de ter recusado anteriormente a troca da bomba, o cliente ao ver o vĂdeo do teste compreendeu aâŚ
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â Live Streamingâ Interactive Chatâ Private Showsâ HD Quality
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That first app I created for C64 hasn't been a state of the art tbh. It was a generic C app, written without taking almost anything C64 specific into consideration. Anyway, this is what I have learnt from it, in no particular order.
Itâs a bad idea to code for C64 on C64. Lack of copy & paste & save & other stuff.
Furthermore itâs a bad idea to code in Basic. What is supposed to work doesnât work, and there are weird limitations everywhere. Two letters max for a variable name isnât that much, tbh.
I have learnt about wonderful CC65 development platform containing a C-crosscompiler, macroassembler, linker and some other useful tools.
Strings are tough to handle correctly on C64 from C :D As it can be seen from the screenshot above (showing Python script running an HTTP proxy on Raspberry Pi and Vice running Web server on C64), the char case is inverted (âaCCEPT-lANGUAGEâ)
New line chars are also hard to deal with. For example, \r is one char (#13) but \n is #13 #10 (two chars), which might have also been dependent on a platform where CC65 was running.
Rebuilding gzip with CC65 and running it on C64 was a bad idea because slow :)
Otherwise I have learnt how to interact with RS232 interface. Trying to separate my Web server into modules failed because I had no idea how to link them, but I decided not to bother with it as long as I have made my C64 to do what it hasnât been meant to do - to serve the web pages!
I didnât actually own one when I was kid. My first computer was IBM PC-compatible Robotron CM1910 from GDR. In 2017 I realized that my job doesnât fully inspire me and I need an IT hobby. So I went to ebay and bought a C64 in a nice condition, and today I donât even remember why havenât I chosen any other retro dino shit like Amstrad, Apple II or whatever else - most likely because of price.
Then I spent some time buying stuff for it - cables, adapters, monitors etc. Most challenging part was to produce a good picture from the composite video output. When I was done I thought what would be cool to do, and implemented a simple Web server for C64. I quickly drafted something in Basic but realized itâs a dead end. So I have chosen C as a language and CC65 as compiler as a reasonable tradeoff between M6510 (the C64 CPU) assembly (which I didnât know anyway) and Basic.
The setup was as follows:
Raspberry Pi runs Python script that opens a web socket and listens for requests on HTTP port.
When a request comes, script sends it to C64 via RS232 cable
On C64 the server itself runs, that listens to data on RS232 and bundles byte sequences into strings of HTTP requests
Server processes the request and returns the response.
I had a few static HTML pages with some PNG images that have been served quite well in such setup.
So I was programming C again, for a platform that was new to me, and used Raspberry. I was proud of myself.