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Hopper FORTH on 6502 : sneaky tricks and improved performance 

Hopper Development Environment
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Creative use of a list of variants to have two values per list member:
- the actual value of the member (integer, string, etc)
- the type of the member:
- int : integer literal
- byte : built-in FORTH word
- uint : user defined FORTH word
- string : string literal or not-yet-tokenized word
Source for this sample:
gist.github.com/sillycowvalle...
Hopper FORTH Documentation on GitHub:
github.com/sillycowvalley/Hop...

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1 июн 2024

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Комментарии : 5   
@Rich-can-do
@Rich-can-do Месяц назад
That's a lovley looking PCB. I see two cyrstals. Does it have hardware serial too? I dont care for the max chip
@biggertigger
@biggertigger Месяц назад
Yes, my previous board last year used the MAX232 as per Ben Eater's design: www.hackster.io/michael-cartwright/rs232-using-the-motorola-6850-acia-with-a-6502-computer-33ea36 It seems kinda silly to convert from TTL to RS232 and then back again so this time I just went direct to FTDI. Current version with schematic can be found here: github.com/sillycowvalley/Hopper/tree/main/Source/Projects/6502SBC/EasyEDA/6502%20Machine/rev12
@Rich-can-do
@Rich-can-do Месяц назад
@@biggertigger Not a Max you dont need it. that is a voltage pump. As you would know. We really only need 0 and 5 volts. no Minus or 25+ stuff that was way back in the day when they had looooooong cables and they needed it. Today we use things like arduino and they just use 0 5 volt serial perfectly fine.
@Rich-can-do
@Rich-can-do Месяц назад
@@biggertiggerThat makes more sense to me as well. Ben Eater I am not sure why he would want to do that old rs323 as only older gear will be able to use it. I am glad you are working on Hopper cross platform. I am very quickly running out of love for the 65uino. If your very skilled with assembly and such I feel it would be great for you, but I am a newbie and I feel Anders great patience will run out very soon with me
@Rich-can-do
@Rich-can-do Месяц назад
I really like the look of hooper. I would love to check it out. I am getting a very basic Ben Eater PCB soon I hope. and I will be just doing newbie asm stuff with it, no trying to load code into ram.