The LT6502b in its new translucent orange case, featuring a 10.1" IPS display and slimmer profile.
LT6502B LAPTOP LAUNCHES WITH 10.1" IPS DISPLAY AND 10MHZ CPU
*Paula's second‑generation 6502‑based laptop arrives in a translucent orange shell. The upgrade doubles screen resolution, nudges clock speed to 10 MHz, and adds a SID emulator and Wi‑Fi. Open‑source files are posted for immediate community tinkering.*
Paula's LT6502b laptop hits the maker scene with a bold visual overhaul and modest performance gains. The new translucent orange shell halves the chassis thickness, while a 10.1‑inch IPS panel replaces the older 9‑inch LCD, delivering 1024×600 resolution and sharper contrast. Clock speed climbs to 10 MHz, and a SID emulator plus Wi‑Fi modem join the feature set, positioning the device as a niche retro‑computing platform with modern connectivity. All schematics and firmware are posted publicly, inviting hackers to iterate on the design. The launch underscores a growing trend: vintage CPU architectures repurposed for open‑source experimentation.
What upgrades does the LT6502b offer over its predecessor?
The LT6502b trims its chassis to half the thickness of the original model and swaps the case for a vivid translucent orange. The display jumps from 800×480 on a 9‑inch panel to 1024×600 on a 10.1‑inch IPS screen, delivering higher contrast and more rows of text. Clock speed rises from 8 MHz to 10 MHz, a modest but measurable boost. A built‑in SID emulator and Wi‑Fi modem replace the earlier configuration, while an expansion slot is omitted to preserve the sleek silhouette. Battery capacity remains similar, so runtime is expected to match the first version.
Design choices and material trade‑offs
Paula chose a translucent orange housing to differentiate the LT6502b visually and to showcase internal components. The new case is thinner, but the blog notes that the heat‑insert holes and supports are "VERY weak" and need reinforcement. A CAPSLOCK LED now sits under the caps‑lock key, adding a subtle status indicator. The IPS panel improves contrast over the previous LCD, but the speaker is described as "anemic" and the Wi‑Fi modem as "too slow and a bit flakey" for real use. These shortcomings are flagged for future revisions, indicating a development‑first approach rather than a finished consumer product.
Hardware specs and performance outlook
At its core, the LT6502b runs a 6502 CPU clocked at 10 MHz, a 25 % increase over the 8 MHz predecessor. The larger 10.1‑inch IPS screen offers 1024×600 resolution, a step up from 800×480. Battery capacity mirrors the earlier model, suggesting comparable endurance despite the larger display. The onboard SID emulator provides classic sound synthesis, though the author admits the chip is limited by modern standards. Wi‑Fi connectivity is present but flagged as unreliable. No expansion slot limits peripheral growth, but the design leaves room for a better speaker, stronger heat‑sink supports, and a more robust battery solution such as an 18650 cell integrated into the hinge.
Open‑source availability and future roadmap
All design files, firmware, and PCB schematics are hosted on Codeberg at https://codeberg.org/TechPaula/LT6502b, inviting community contributions. Paula lists several improvement targets: enlarging heat‑insert supports, sourcing a faster Wi‑Fi modem, upgrading the speaker, and redesigning the power system to accept USB‑PD without pre‑programming. A faster boot path is also on the agenda, with plans to copy ROM to RAM and enable ROM swapping. The author expresses a desire to read FAT16 file systems on the CF card instead of a custom format, signaling a move toward broader compatibility. These open‑source cues suggest the LT6502b will evolve through community patches rather than a closed commercial cycle.
Frequently asked questions
What screen size does the LT6502b have?
The LT6502b uses a 10.1‑inch IPS screen with a resolution of 1024×600.
What CPU speed does the LT6502b run at?
The LT6502b runs its 6502 CPU at 10 MHz, up from the previous 8 MHz.
Where can the LT6502b code and PCB files be downloaded?
All code, PCB files, and related resources are hosted on Codeberg at https://codeberg.org/TechPaula/LT6502b.
The LT6502b proves that retro hardware can still evolve, but its current weaknesses—flimsy heat‑sink supports, weak speaker, and unreliable Wi‑Fi—highlight the gap between hobbyist prototypes and production‑grade devices. By publishing every design file, Paula hands the community the keys to close those gaps. If the open‑source community addresses the listed shortcomings, the LT6502b could become a benchmark for 6502‑based laptops, blending nostalgic computing with contemporary usability. Until then, it remains a striking proof‑of‑concept that invites both admiration and critique.
Sources: Hacker News – Laptop Based on 6502 CPU (https://www.maddox.pro/?p=448)