Ian Hanschen
@furan.bsky.social
another piece in place: wrote a beos driver for the piix4 chipset to do one thing and one thing only: pass the stats - x86 with blinkenlights, my first beos driver. rip be, inc.
November 30, 2025 at 2:54 AM
another piece in place: wrote a beos driver for the piix4 chipset to do one thing and one thing only: pass the stats - x86 with blinkenlights, my first beos driver. rip be, inc.
two celerons walked into a bar
November 28, 2025 at 6:16 PM
two celerons walked into a bar
November 28, 2025 at 1:11 AM
Turkey day fun: You can interface I2C devices with a PC’s SMBUS as long as there are no address conflicts. This is an SSD1306 based 128x32 monochrome OLED on an abit bp6 motherboard (running T2 SDE Linux). SMBCON pinout and gist follow. It is device ‘3c’ here.
November 28, 2025 at 1:11 AM
Turkey day fun: You can interface I2C devices with a PC’s SMBUS as long as there are no address conflicts. This is an SSD1306 based 128x32 monochrome OLED on an abit bp6 motherboard (running T2 SDE Linux). SMBCON pinout and gist follow. It is device ‘3c’ here.
The masses were robbed of bicolor dot matrix vacuum fluorescent displays.
September 27, 2025 at 4:17 PM
The masses were robbed of bicolor dot matrix vacuum fluorescent displays.
Weird retro computing find: a Dream SAM9203 based ISA card with the GMS93160x sample ROMs that got them in hot water with Roland. I think it’s a reference design, labeled DREAM 92PCGM. Descent II approves. Photo in reply is from seller - I removed the stray component lead before trying the card out.
September 7, 2025 at 4:13 AM
Weird retro computing find: a Dream SAM9203 based ISA card with the GMS93160x sample ROMs that got them in hot water with Roland. I think it’s a reference design, labeled DREAM 92PCGM. Descent II approves. Photo in reply is from seller - I removed the stray component lead before trying the card out.
This is a pretty good example of what it's like to try an LLM right now. Generating a table of JTAG instruction registers and their use based on the Verilog and interrupting itself to advertise a web development suite instead.
May 9, 2025 at 5:23 PM
This is a pretty good example of what it's like to try an LLM right now. Generating a table of JTAG instruction registers and their use based on the Verilog and interrupting itself to advertise a web development suite instead.
That gradient test pattern was generated during scanout. Took a few days but I finally got the trace delay settings close enough to scan a framebuffer out of DDR SDRAM. Now all board features are working/in use.
May 3, 2025 at 3:00 AM
That gradient test pattern was generated during scanout. Took a few days but I finally got the trace delay settings close enough to scan a framebuffer out of DDR SDRAM. Now all board features are working/in use.
Sometimes it’s the little things. Reverse engineered Gidel PSDB_HDMI AD9889B TX output pattern generated by fully reverse engineered Gidel ProcSpark II ep2c35 FPGA PCI board. I wrote a new controller IP for the ep1c4 FPGA that sits in between the PCI bus and the main FPGA.
April 29, 2025 at 11:32 PM
Sometimes it’s the little things. Reverse engineered Gidel PSDB_HDMI AD9889B TX output pattern generated by fully reverse engineered Gidel ProcSpark II ep2c35 FPGA PCI board. I wrote a new controller IP for the ep1c4 FPGA that sits in between the PCI bus and the main FPGA.
Wrote some i2c initialization for the ad9889 HDMI tx on a development board, was certain that I got it wrong because it looked like this, spent 2 hours tweaking it. Then I checked the schematic vs the default pin mappings provided with the kit in the golden top file - spot the bug.
March 25, 2025 at 5:29 AM
Wrote some i2c initialization for the ad9889 HDMI tx on a development board, was certain that I got it wrong because it looked like this, spent 2 hours tweaking it. Then I checked the schematic vs the default pin mappings provided with the kit in the golden top file - spot the bug.
Terasic HDMI-FMC documentation wasn't great, so TR5 board pin assignments -> FMC header pin numbers -> Stratix V System Development Kit FMC header is a matter of spreadsheets there should be a better way. I then just create the Tcl in the spreadsheet (right) because it's easy enough.
February 25, 2025 at 8:57 PM
Terasic HDMI-FMC documentation wasn't great, so TR5 board pin assignments -> FMC header pin numbers -> Stratix V System Development Kit FMC header is a matter of spreadsheets there should be a better way. I then just create the Tcl in the spreadsheet (right) because it's easy enough.
Huh, the 386book folks did an MSX book! I may have to buy one.
8086cpu.com/MSX/103.html
8086cpu.com/MSX/103.html
February 19, 2025 at 1:39 AM
Huh, the 386book folks did an MSX book! I may have to buy one.
8086cpu.com/MSX/103.html
8086cpu.com/MSX/103.html
Curcumin in turmeric doing the thing
January 19, 2025 at 8:57 PM
Curcumin in turmeric doing the thing
When SciAm was good.
January 16, 2025 at 5:24 PM
When SciAm was good.
Lobster Zoidberg with Mustard Beurre Monté served in a Dumpster Vol au Vent with a side of greens
January 12, 2025 at 7:19 PM
Lobster Zoidberg with Mustard Beurre Monté served in a Dumpster Vol au Vent with a side of greens
reject modernity; embrace tradition
January 10, 2025 at 8:14 PM
reject modernity; embrace tradition
Scallops have gone to my head. Taking the time to learn to cook while I build my own company. I have lost 100lbs as of today (the hard way)!
January 7, 2025 at 5:05 PM
Scallops have gone to my head. Taking the time to learn to cook while I build my own company. I have lost 100lbs as of today (the hard way)!
Finally leveled up preparing steaks with the reverse sear.
January 7, 2025 at 4:18 AM
Finally leveled up preparing steaks with the reverse sear.
A Christmas Carol with George C. Scott still holds up.
December 24, 2024 at 5:45 PM
A Christmas Carol with George C. Scott still holds up.
Real. I don't know why they made these, maybe to remove 1 pin from going through? hgc-15m/f-2
December 18, 2024 at 8:20 PM
Real. I don't know why they made these, maybe to remove 1 pin from going through? hgc-15m/f-2
I miss working on Windows. It was often highly stressful, but also a lot of fun.
March 11, 2024 at 4:27 PM
I miss working on Windows. It was often highly stressful, but also a lot of fun.