Uploaded June 2024 | Updated September 2026, 2 weeks ago
This is a follow-up of my 4MB SIMM project. At that time, I created an altered version of SIMM PCBs that integrated a mod to operate EDO memory chips in FPM. A simple switch toggled between both modes and allowed me to get my 386 board to 32MB of system memory. Today, we are pushing the board to the limit! I will attempt to create 16MB SIMMs - the maximum supported capacity of 30-pin SIMMs. Let's see if I will be successful to get my 386 to 64 or even 128MB!
▬▬▬▬ *PCBWay* ▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬
Sponsored by PCBWay: 🔸pcbway.com/g/lF253I
PCBWay provides full feature custom PCB prototyping services, 3D printing, and much more. Check them out using my referral link above and get a 5 USD welcome bonus when you sign up as a new customer!
16MB SIMM PCBs:
🔸pcbway.com/project/shareproject/16MB_SIMM_PCBs_for_16Mx4bit_3_3V_memory_chips_with_dual_power_supply_5fdb3f3a.html
My contributions to the Community Project Space at PCBWay:
🔸pcbway.com/project/member/?bmbno=0140E301-54A5-47
▬▬▬▬ *UpLateGeek's Project* ▬▬▬▬▬▬▬▬▬▬▬▬▬
🔸github.com/UpLateGeek/Let-s-Make-Some-Memories
▬▬▬▬ *Affiliate Links* ▬▬▬▬▬▬▬▬▬▬▬▬▬
Visit my website to find affiliate links to most of the tools and products I use
🔸bitsundbolts.com/affiliate
Thank you for your support!
▬▬▬▬ *Support Bits und Bolts* ▬▬▬▬▬▬▬▬▬▬
Patreon: 🔸patreon.com/BitsUndBolts
Bitcoin: bc1q2dvf9flf78lam33qjj9w9xgvfxdgre7g9x3rmw
Twitter/X: 🔸twitter.com/BitsUndBolts
Facebook: 🔸facebook.com/bitsundbolts
Website: 🔸bitsundbolts.com
▬▬▬▬ *Timestamps* ▬▬▬▬▬▬▬▬▬▬▬▬▬▬
00:00 Intro
01:36 Recap
04:43 Maximum capacity
05:31 Research
08:34 Preparation
09:45 Design PCBs
10:57 Unpacking
11:51 Building SIMMs
16:50 Final touches
17:19 Test
19:29 Where to get?
This is a follow-up of my 4MB SIMM project. At that time, I created an altered version of SIMM PCBs that integrated a mod to operate EDO memory chips in FPM. A simple switch toggled between both modes and allowed me to get my 386 board to 32MB of system memory. Today, we are pushing the board to the limit! I will attempt to create 16MB SIMMs - the maximum supported capacity of 30-pin SIMMs. Let's see if I will be successful to get my 386 to 64 or even 128MB!
▬▬▬▬ *PCBWay* ▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬
Sponsored by PCBWay: 🔸pcbway.com/g/lF253I
PCBWay provides full feature custom PCB prototyping services, 3D printing, and much more. Check them out using my referral link above and get a 5 USD welcome bonus when you sign up as a new customer!
16MB SIMM PCBs:
🔸pcbway.com/project/shareproject/16MB_SIMM_PCBs_for_16Mx4bit_3_3V_memory_chips_with_dual_power_supply_5fdb3f3a.html
My contributions to the Community Project Space at PCBWay:
🔸pcbway.com/project/member/?bmbno=0140E301-54A5-47
▬▬▬▬ *UpLateGeek's Project* ▬▬▬▬▬▬▬▬▬▬▬▬▬
🔸github.com/UpLateGeek/Let-s-Make-Some-Memories
▬▬▬▬ *Affiliate Links* ▬▬▬▬▬▬▬▬▬▬▬▬▬
Visit my website to find affiliate links to most of the tools and products I use
🔸bitsundbolts.com/affiliate
Thank you for your support!
▬▬▬▬ *Support Bits und Bolts* ▬▬▬▬▬▬▬▬▬▬
Patreon: 🔸patreon.com/BitsUndBolts
Bitcoin: bc1q2dvf9flf78lam33qjj9w9xgvfxdgre7g9x3rmw
Twitter/X: 🔸twitter.com/BitsUndBolts
Facebook: 🔸facebook.com/bitsundbolts
Website: 🔸bitsundbolts.com
▬▬▬▬ *Timestamps* ▬▬▬▬▬▬▬▬▬▬▬▬▬▬
00:00 Intro
01:36 Recap
04:43 Maximum capacity
05:31 Research
08:34 Preparation
09:45 Design PCBs
10:57 Unpacking
11:51 Building SIMMs
16:50 Final touches
17:19 Test
19:29 Where to get?
