As we all know, the Apple II can produce four colors in the HIRES mode, plus black and white (which are not "colors", but "shades". But what can I complain. Some computer folks are so uneducated that they pervert the meaning of words all the time. Such as …

Hi all,I'm making my own Videx softswitch. I have the 80 col card in  my ][+ and it works great with a pushbutton A/B switch but I don't have a softswitch. I've seen them on eBay but I think it would be fun to make my own (I etch my own PCBs). I saw a PCB …

"Pure blast processing".One of the key weapons the SNES had in its battle against the Sega Genesis / Mega Drive was the ability to smoothly scale and rotate background layers using Mode 7, a special graphics mode built into its hardware.This feature was pu …

Shades and Phantoms... happy Halloween Turns out these Motion Blur demos creating extra luminance shades also double the horizontal resolution with phantom pixels accompanying with the extra shades.viewtopic.php?t=8322... it works:The human eye expects m …

Hi all, I found a IIe in the loft (PAL version) and it does not boot.  Clock phases are correct and address/data lines look OK.  Adr downstream of buffers 74LS244 also look OK and buffers test OK (in an LED & switch tester!). There is no beep. Scre …

Hi, I have some broken VT330+ lying around and want to give it a try to repair. It has an interesting graphics mode and I would love to put back the thing to life. Strange thing is that I could not find service manual or schematics for it on the internet. …

Hello, I got my Olivetti M24SP with GO329 / DEP (Display Enhancement Board) up and running. Now I want to see "something" different. I have a GEM installation and there I know that I have to swap one file to switch the graphics mode. This is the …

Hi EveryoneAs mentioned, trying to fix an ASSY ASSY 326298 REV A mainboard here.Total first timer for me, never fixed a C64 to this day.I started off using diag harness and test cartridge, which gave me errors on- character ROM: I unsoldered all three ROM …

(Answer: Between 7 and 15 (or 17), depending on what you consider "working". Curious? Read on.)So after the "A3000 repair advice" thread elsewhere on the forums where the CMOS needed to be replaced, I got curious about how many modules were required in or …

Hi Folks, how are you?It has been a long time of my last post. I am rebuilding my retro cave and I started adding an IBM PS/1 model 2121. I am facing an issue with the monitor. It seems to have some kind of vertical sync issue (text blinking vertically u …

I'm setting up 486 DX33 PC with FIC 486-GIO-VT motherboard and ATI Mach32 GR Wonder (EXM229) 1MB VESA card.I'm not well versed with VESA video modes, but my guess is that my graphics card doesn't support some (all?) of them.I tried running PC Player Bench …

Hi.I want to know if everything is ok, or if something is wrong, with my hardware running half-life.If you have pentium 1 system, can you please share your results here? (write your specs and fps result)My system specs are: lucky star socket 7 mobo with 5 …

We're back for Episode 96! In this episode Cody and Eric catch up on the news +  6 Good Bow And Arrow Games. We are doing news for the first monthly episode and then "catching up" later in the month.   Episode Guide ---------------- 3:04 - Quick Questi …