02 December 2022 - 09 December 2022

1. MIT OCW
- 1.1. Done for the year.
2. Mill Controller #2
- 2.1. Mounted on display enclosure
- 2.2. Need to investigate new HW/SW for eventual replacements
  - 2.2.1. Old crap ain't gonna last forever
  - 2.2.2. Buildroot/Linux 5.15 PREEMPT + latency tools
3. Alum Rock Data Center
- 3.1. need to check rocky, others? (arch?) for suitability
- 3.2. recheck ALMA, now that CERN and Fermilab are using it
4. OLPC
- 4.1. Trish's OLPC battery fixed and OS updated.
5. Virtual Orchestra
6. gat
- 6.1. spectrogram done - matches 'octave' output
7. RIOT drivers
8. mcd05 32 button/led box
9. AMD 2900 bitslice computing
- 9.1. Probably my oldest uncompleted project
- 9.2. Exploring possibilities for something constructive
10. Hitachi HD68B09E CPU
11. PLD programming
12. More project ideas
13. David Davies

1. MIT OCW

1.1. Done for the year.

2. Mill Controller #2

2.1. Mounted on display enclosure

2.2. Need to investigate new HW/SW for eventual replacements

2.2.1. Old crap ain't gonna last forever

2.2.2. Buildroot/Linux 5.15 PREEMPT + latency tools

First pass done - boots on real hardware

3. Alum Rock Data Center

3.1. need to check rocky, others? (arch?) for suitability

3.2. recheck ALMA, now that CERN and Fermilab are using it

4. OLPC

4.1. Trish's OLPC battery fixed and OS updated.

5. Virtual Orchestra

5.1. sfz file tests

5.1.1. need tooling to edit sample files

5.2. increasingly skeptical whether quality results are possible

5.3. maybe should treat as platform for concatinative synthesis

5.4. maybe should just accept the limitations and work with it

One should not be disappointed that a guitar can't sound like a flute.

6. gat

6.1. spectrogram done - matches 'octave' output

7. RIOT drivers

Implemented - needs testing.

7.1. WS2801

7.2. Velleman KA03

7.3. Velleman KA05

8. mcd05 32 button/led box

8.1. Recovered schematics.

8.2. Planning software.

8.3. Received STM32F767 Nucleo144 with Ethernet.

8.3.1. Test program running.

8.3.2. Need to consider CoAP multicast discovery.

8.3.3. Consider simpler architecture with STM32F767 as a 'hub'.

9. AMD 2900 bitslice computing

9.1. Probably my oldest uncompleted project

9.2. Exploring possibilities for something constructive

Create verilog models for 2903/2910 and verify against hardware?

10. Hitachi HD68B09E CPU

10.1. RAM/UART/IO

Maybe have a standard peripheral set for 8 bit CPU bringups

10.2. Arduino Mega 2560 DMA loader

…Along with standard 8 bit loader

10.3. Generate quadrature clock directly

10.4. Full Bus SW Emulation infeasable

6809 1000ns maximum cycle time too short

11. PLD programming

Looks like Atmel 16V8 is the last 5V PLD part left standing. Maybe not surprising that there still doesn't appear to be a fully open source tool chain for programming. How hard could it be? (!) Could next-pnr generic help? Might be easier to use espresso for logic array and program output logic bits directly for simple stuff.

12. More project ideas

12.1. Zuse Z3 simulation in Verilog

Good excuse for floating point ALU design.

12.2. GMPForth ports to simulators

12.2.1. SIMH for some targets (vax)

12.2.2. MAME looks interesting for microprocessor system emulations

How to support erzatz systems?

12.2.3. Ports to classic figFORTH targets

12.3. GMPASM assembler

May be useful for handbuilt and rare systems (DMX1000?).

12.4. Extracting ISO Superboard Forth ROMS for MAME emulation

12.5. 'bwocl' OpenCL tooling

12.5.1. Offline compilation

12.5.2. Standard Kernel Running

12.6. hardware support for classic 5V CPUs

12.6.1. RTX2000, CDP1802 still available!

12.6.2. 6502, 68000, 320C30, others on hand

12.6.3. CPUs with totally async bus may be supportable without RAM

12.6.4. Use 5V Atmel CPU as boot loader controller

12.6.5. Could use small foorprint monitor in asm (gmpmon?)

12.6.6. Started planning for HD68B09E.

12.7. Existing 'retro' hardware still working?

12.7.1. OSI Superboard

Unknown. Composite to VGA adapter didn't seem to work. Needs analysis. Found OSI model 610 board underneath!