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| -rw-r--r-- | doc/_start_here.txt | 1 | ||||
| -rw-r--r-- | doc/loader.txt | 57 |
2 files changed, 58 insertions, 0 deletions
diff --git a/doc/_start_here.txt b/doc/_start_here.txt index 59992dd..8c00c25 100644 --- a/doc/_start_here.txt +++ b/doc/_start_here.txt @@ -81,6 +81,7 @@ For full specification text, visit https://docs.riscv.org/reference/home/index.h Documentation files: * _start_here.txt: This file +* loader.txt: How to set up and use the hex loader, also includes wiring diagrams, read this one if you want to load existing software * toolchain.txt: Cross-toolchain setup, needed if you want to build software and don't already have a riscv32(be)-none-elf toolchain * monitor.txt: Setup and operation of the built-in machine-code monitor * ecall.txt: Available M-mode ecall functions diff --git a/doc/loader.txt b/doc/loader.txt new file mode 100644 index 0000000..eab20bb --- /dev/null +++ b/doc/loader.txt @@ -0,0 +1,57 @@ +RVController Loader Setup and Usage +=================================== + +The loader is used to load programs in Intel HEX format into RVController's memory. + +To use it, connect digilines as shown: + ++---------------+ +---------------+ +| Luacontroller | |\ | | Luacontroller | +| |============| >|============| | +| (loader) | |/ | |(RVController) | ++---------------+ Diode +---------------+ + || || +---------------+ + || || | Digiterms | + || ||=========| CRT Monitor | ++---------------+ || | | +| Advanced | || | Channel | +| Touchscreen | || | "monitordisp" | +| | || +---------------+ +| Channel | || +| "touchscreen" | || +---------------+ ++---------------+ || | Digiterms | + ||=========| Keyboard | + || | | + || | Channel | + || | "monitorkb" | + || +---------------+ + || + || +---------------+ \ + || | Digiterms | | + ||=========| CRT Monitor | | + || | | | + || | Channel | | + || | "stdout" | | + || +---------------+ | + || +-- Optional, only needed + || +---------------+ | for program I/O + || | Digiterms | | + ||=========| Keyboard | | + || | | | + || | Channel | | + || | "stdin" | | + || +---------------+ / + vv + To other + peripherals + +Note that the advanced touchscreen must be connected before the loader Luacontroller is programmed. +If the Luacontroller was accidentally programmed first, program it again after connecting the touchscreen. + +The diode may be from either digiline_routing or digicontrol. + +Once the loader is set up and RVController is ready to receive a program: +1. On the loader touchscreen, select or unselect the "Run after load" option, depending on the desired behavior. +2. Paste the contents of an Intel HEX file into the loader touchscreen, then click "Load" +3. RVController will automatically reset, then addresses will scroll across the monitor display as data is loaded. +4. When loading is complete, the program will automatically start if "Run after load" was selected in step 1. |