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Do you see any areas of improvement here? I finally got some code written for this last night. I'm messing around with the idea of making a processor trainer emulator like they had in the 1970's like the SDK-85.... |
Thursday, 21 May 2020 - 12:55 |
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New SAM user questions... I've worked with AVR's, but I've got a SAMD20J18A on a dev board that I'm just beginning to mess with. I reinstalled my Atmel Studio 7 to include the platform. ... |
Thursday, 7 May 2020 - 21:15 |
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static inline does not inline, but just inline does in AS7 I've been writing my first emulator code which has been a learning adventure. I have an execute function that uses a switch for each opcode. Then each opcode calls an... |
Thursday, 7 May 2020 - 17:00 |
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Does the parametric search show EBI capable AVR's? I've tried looking through its list of options, but don't see one that pertains to EBI (external memory). Does Microchip call it something else or is it not on the search?... |
Saturday, 2 May 2020 - 19:55 |
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Compiler optimization between different CPU widths... I am working on making my first emulator of something, the Intel 8080. I am just in the beginning stages and am doing this just for entertainment and educational use right... |
Sunday, 26 April 2020 - 16:59 |
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Easy/decent way to get 64K of SRAM available in an AVR I'm thinking about trying to emulate an 8080 in an AVR, but the largest one I know of has 32K sram (xmega384c3). I've tried messing with external bus interface memory, and I... |
Friday, 24 April 2020 - 20:17 |
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C vs. C++ question about initialization differences... A long time ago here at avrfreaks I almost remember a discussion about a difference between C and C++ in how they initialize variables, but I don't recall how it went. Was... |
Friday, 24 April 2020 - 18:33 |
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What AVR's are you guys using lately? Are many of you onto the new 0 series/1 series? Or still using the mega/tiny series before these? |
Monday, 17 February 2020 - 21:58 |
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How would you setup the interrupts for this on the mega4809 This is for my multiplexed quad 5x7 display. The device will be a SPI slave and allow daisy chaining the display so it will have its MISO connected to the next displays MOSI... |
Monday, 9 September 2019 - 23:44 |
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Any tips for labeling pins with #define My tried a true method for the mega series was this: #define PIEZO_PORT PORTB #define PIEZO_POS_PIN 0 #define PIEZO_NEG_PIN ... |
Wednesday, 4 September 2019 - 01:34 |
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Pin current consistency / atmega 4809 I've got a breadboard up and running with an adapter that uses four LTP-305G displays, each is 5x7, so this is 20 columns by 7 rows. Using some dual logic level mosfets (... |
Thursday, 29 August 2019 - 22:42 |
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mega1284 tqfp capacitor on all 4 vcc/gnd pins? This project has very little power use from the AVR - nearly everything is high impedance except maybe one LED which will be less than 5mA. Does it really need a bypass cap... |
Thursday, 22 August 2019 - 03:19 |